Solving Systems of Equations… Substitution Method (NancyPi)

Published on May 16, 2018 by

MIT grad shows how to use the substitution method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC SUBSTITUTION example, skip to time 0:19. 2) For an example where it's TRICKIER to solve and also involves FRACTIONS, skip to 08:17. and P.S.) For WEIRDER-LOOKING DIFFERENT FORMS of systems, for which you can still use substitution, skip to 16:46. Nancy formerly of MathBFF explains the steps.

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For how to solve a system of linear equations with the ELIMINATION METHOD, jump to:

What does it mean to solve a system of equations using the SUBSTITUTION METHOD? It means to solve for the x and y values that make both equations true, using the substitution method. Substitution is just one way of solving (elimination is another way). Here are the THREE STEPS you can always follow:

STEP 1) First, solve for x or y in either of the two equations in the system (get x or y alone on one side). It doesn't matter which equation you use first, and it doesn't matter whether you get x alone first or y alone first. You can pick whatever looks easiest to solve for in the system.

STEP 2) Then, take the expression you found for y (or x) and plug it into the other equation you haven't used yet. For instance, if you got y alone in the first step, take that expression for y and plug it into, or substitute it into, the variable y in the other original equation in the system. Then, simplify the expression by distributing to open up the parentheses (using the distributive property) and combining like terms. Solve for the unknown variable in this equation.

STEP 3) Finally, once you solve and get an actual number for a variable, you can take that number and plug it back into either original equation in the system and then simplify and solve for the other variable. This (x,y) pair is your solution.

IMPORTANT: If you get something like 0 = 0 or 8 = 8, or something like 1 = 2 or 0 = 21 when you are following these steps and trying to solve, then you've probably found a special case. If you get something TRUE like 0 = 0 (a number equals the same number), then there are an infinite number of solutions to the system, and you can just write "infinitely-many solutions". If instead you get something FALSE like 0 = 21, then there is no solution (inconsistent system), and you can write "no solution".

For more of my math videos, check out:

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  • Slayerx 5 years ago

    Nice way to explain

  • Akram Faiza 5 years ago

    Hey Nancy please make video on matrices and determinants

    • Gabriel Paulo Nginhena Gabita 4 years ago

      Matresses and Detergents

    • pancakes for you 4 years ago

      @Gabriel Paulo Nginhena Gabita hahhahaha lol

  • A Plastic Shoe 5 years ago

    Coming out with all these videos before my finals bless you

    • CJ_Combo 4 years ago

      Are u in college doing this? Or highschool

    • Potato 4 years ago

      @Krystian Murdzek same

  • Nomon Munir 5 years ago

    i would just do linear algebra and matlab lol

  • Botch 5 years ago

    NANCY, we need integrals plz

  • reznoire 5 years ago

    1080p ๐Ÿ‘Œ๐Ÿ‘Œ๐Ÿ‘Œ

  • How To Vegan 5 years ago

    Jeez your fucking gorgeous.

  • Keek Li 5 years ago

    I love how u lay things out!

  • barracuda40 5 years ago

    great to see you back teaching Nancy, loving your explanations , great tutor

  • ivas ceo 5 years ago

    how can you do

    x times y ?

    in the 3rd one last example……

  • Ryan Sheridan 5 years ago

    You make the equations easy to solve. Well spoken, clearly defined problems and solutions. My ERAU instructor linked us to this video, very pleased. Thank you!

  • ๆ„›ๅบทๅจADAMS CONRAD WILLIAM 5 years ago

    Which number did she not write in the video?

    Answer : 9

  • Jugginator 12 5 years ago

    On the second problem I paused it to try to practice elimination (reviewing lol). I multiplied the bottom equation by 2, cancelling out the x and y giving me 0=0 (instead of -8=-8.. i think if you simplified that it’s still 0=0, right?) Still infinitely many solutions, but is that still a correct way? Man I’ve been overthinking a lot if so lol thank you again!

    • Bruno Viana 5 years ago

      I did without simplifying by 2 and found 8 = 8. I do not know what this means. Nor did I continue the resolution.

    • Ronald Jensen 4 years ago

      Jugginator 12, yes, the two equations are the same line.

    • Jugginator 12 4 years ago

      Ronald Jensen Thank you!

  • Zohaib Ajmal 5 years ago

    You’re the best nancy

  • Bruno Viana 5 years ago

    Nancy, thank you very much. Good video. โ˜บ

  • Michael Daniel 5 years ago

    Your video helped me a lot. Thank you so much!

  • Lysdexic 5 years ago

    Recognized how hard it is to write backwards……

    • Abdur Rafay 3 years ago

      ThePunisher ๐Ÿ˜‚

    • Kenta Salgado 3 years ago

      IQ 10000

    • Howard Burton 3 years ago

      she’s an MIT grad. She knows tech stuff

    • xxxDea_ 3 years ago

      @bon bon if shes writing on a mirror….. where the camera?

    • Josh Oca 3 years ago

      Guys she has a very clear glass wall(or glass whiteboard) in front of her

  • PJ Wilkins 5 years ago

    “you might not like math but you can like my videos”๐Ÿ˜‚

    • Pray Yan 4 years ago


    • Zara Evelyn 4 years ago

      that acc made me laugh out loud lmao

    • maria bryngelson 3 years ago

      so true

    • Sofia Gutierrez Vlerick 3 years ago


    • DragonXCrack 3 years ago


  • Adem Ismail 5 years ago

    Nice Nancy pi

  • Vincent Ortega 5 years ago

    Hi Nancy, excellent explanation, and very clear. Thank you so much. God bless you.

  • Kate Gerlach 4 years ago

    this was so helpful thank you so much!!

  • jason yanto 4 years ago

    Thank you si much๐Ÿ˜

  • jason yanto 4 years ago

    You are the best ๐Ÿ˜

  • Awadh Ki Rasoyi 4 years ago

    You Make learning easy..๐Ÿ˜๐Ÿ˜Š

  • Litza J 4 years ago

    U make math easier keep it up๐Ÿ˜ƒ

  • Ablante Yigzaw 4 years ago

    omg stalp with the cringy endingggg

    • UpperLip 4 years ago

      I agree

  • Sudip Chowdhury 4 years ago

    you r my crush

  • Luciana Cantu 4 years ago

    Omg thank you so much I have a test tomorrow and you are the only person on YouTube I actually understand

    • Luciana Cantu 4 years ago

      Super grateful!!

  • robwin007 4 years ago

    NancyPi do you have videos solving system of โ€linearโ€ equations using matrices?

  • Texan Range 4 years ago

    Your videos help so much because you are easy to understand

  • Jacob Alliston 4 years ago

    Help ! -4x+3y=15 and -6x-8y=10 if you could show me how to solve that would be great!

  • Grace Tafari 4 years ago

    Juno Award

  • ์‚ฌ๋ž‘ํ•ด1131 4 years ago

    Just use photomath lol

    • Chalala Wealthy 4 years ago

      Or mathway๐Ÿ˜‚๐Ÿ˜‚ But good
      Video, no liar

    • Danial Syafiq 3 years ago

      i got suspended for using it in a test

    • Colonel Fanzipantzen 3 years ago

      @Danial Syafiq Yo mom gay

    • FOR HONOR 3 years ago

      I did but now it seems you’ll have to “pay to learn” now. Its stupid. I liked it before but ehh its gone form good to idgaf bout it anymore!

    • Zainab Amin 3 years ago


  • Unknown j 4 years ago

    Wow you are so so so so so so better than my teacher. Thank you so much this helped me a lot. You are the best

  • Kaitlyn Reyes 4 years ago

    giiiiiirl you helped so much, thanks!!!

    • Sujitshanu Dilip 3 years ago


    • Vikas Rai 3 years ago


  • Melanie 4 years ago

    You rock

  • Peter C 4 years ago

    Thanks for the help Nancy! I can finally pass Algebra (I hope)!

  • Durj 4 years ago

    lol i got an ad in the beginning saying: “Are you really still searching for math explanations on youtube?”

  • John Rodriguez 4 years ago

    Nancy you are my favorite teacher. Very easy to understand because you explain it well. Also, your voice sounds so pleasant and you look pleasantly beautiful as well.

  • Felipe Serrano 4 years ago

    i finally learned it

  • Solomon Persaud 4 years ago

    buzz off all haters of this video it was exceptional very good

  • PoseidonodiesoP 4 years ago

    Iโ€™ve been looking for one with fractions for ever, no video ever goes over them

  • Paige Wallace 4 years ago

    yuh tooooo stupidddd

  • Nicole Kline 4 years ago

    This is great and so helpful! Thank you for making this ๐Ÿ™‚

  • Ryan Scheibe 4 years ago

    thank you so much my teachers where acting school by the way on my teachers account

  • danialraziq 4 years ago

    thank you soooo much it really helps me before exam so thank you PS im in form 1

  • danialraziq 4 years ago


  • salg 4 years ago

    Nooo… I just found this after the system of equations murdered me. Great stuff and explanation. Much better than Khan.

    • Nightcore Cuddles 3 years ago

      khan academy sucks

  • Be happier 4 years ago

    Please can you make more videos about logarithm?

  • Lene Bayta lala 4 years ago

    tnx make video about elimination method and graphing

  • Chidi Ekweonu 4 years ago

    Best tutorial ever. Thanks Nancy

  • Steve Santos 4 years ago

    Thank you Nancy,but don’t tell me “not to worry,”because that’s an indicator to worry for me๐Ÿ˜ฆ

  • The one The only 4 years ago

    Aye Iโ€™m watching this in class

  • The one The only 4 years ago

    Aye Iโ€™m watching this in class lmao shits wild

  • BenjamรญnZcc A 4 years ago

    Thank you for this video. It helps a lot. in fact, I’m from Mexico.

  • Noah Kosta 4 years ago

    Thank you for this, doing math assignments that are late because I didnโ€™t know how to do it, but thanks to you I do nowโค๏ธ

  • Meher Mudassar 4 years ago

    Can I just say this video is the most helpful one out there! Love it!

  • Rakan Areekan 4 years ago


  • Ashmit Sharma 4 years ago

    you are a legend!
    I spent soo much time trying to learn this from my textbook but you just made it so easy. You deserve more subs!

  • Fylakio - Sequence 59:A - 2:1:33 4 years ago

    I love her bros

  • Vivek Himraj 4 years ago

    Nancy you’re sooooooooooooooooooooooooooooooooooooooooooooooooo gorgeous princess… Ehem, ummm, that aside, I can safely say I’m learning math all over again at a pace I’ve never learnt before so thanks much. ๐Ÿ‘ ๐Ÿ‘

    • JayDog 1407 4 years ago

      Vivek Himraj uhhh the fuck dude ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚

  • Nuwansa kahakotuwa 4 years ago


    • แบžrลซttฤ 3 years ago


    • Scarred 3 years ago

      @แบžrลซttฤ grammar police lmao

  • 36 M 4 years ago

    Ohh thanks I understand my lesson from you โค๏ธโค๏ธโค๏ธโค๏ธ

  • Danica Bliss 4 years ago

    bruh my pre-algebra teavher made this our hw and then we had to write a paragraph using 5 vids from this vid r.i.p

  • ahmed jl 4 years ago

    anyone from CALC ?

    • ahmed jl 4 years ago

      Milay Anime Do i know u ?

    • Krystian Murdzek 4 years ago

      Iโ€™m doing this in 7th grade

  • Floretta Dean 4 years ago

    this video was very helpful

  • Lenna Tehrani 4 years ago


  • Noora mohsin 4 years ago

    thank you so much your so helpful better than my teacher

  • Keith E 4 years ago

    I wish you were my teacher

  • Tiaaa Butlerrr 4 years ago

    Can u just be my teacher please ๐Ÿ’€

  • Thakideli 4 years ago

    Love the video you make everything make sense @Nancy pi

  • Janta Devi 4 years ago

    you are the best teacher in the world….I understood the concept so well now..thanku

  • Yosef Yosef 4 years ago

    This is helpful Nancy thank you

  • Vortex 2003 4 years ago

    How does she write backwards what a legend.

  • Shayaan Nasir 4 years ago

    thank you so much for helping me, you are more helpful than my real teacher.

  • oo pancakes 4 years ago

    This made so much sense! My math teacher never showed us how to do these types of problems and he teaches too fast. Thankyou!โค๏ธ๐Ÿ’•๐Ÿ™

  • talha ajmal 4 years ago


  • Hascena Radwan 4 years ago

    This is confusing but easy at the same time ??

  • Atticus Calrissian 4 years ago

    Watched this to complete my math assignment. Thank you for helping!

  • Henry Dinh 4 years ago

    You explain this better than my teacher. Thank you!!!

  • Flexyy_BS 4 years ago

    I understood nothing because you were speaking and not showing examples๐Ÿ‘Ž

    • Flexyy_BS 4 years ago

      Dislike button works

    • Ben 4 years ago

      The fuck? The whole video is her showing examples

  • Phidarrius Croom 4 years ago

    Ur So hotโค๏ธ

  • Adora Starmach 4 years ago

    I wish you were my teacher in school. Thank you so much๐Ÿ™You helped me more than you know.

  • Alexander karczewski 4 years ago

    Hi Nancy
    What about this one
    2/3x + y = 14/3
    4/5x – 3/4y = -10
    Thank you

    • and its kylian mbappeee 4 years ago

      y = -92/5 x = 77/2

  • Bryson Ferguson 4 years ago


  • Shelby Brown 4 years ago

    9:41 wait wouldnt you add the 2y to the 4 insted of tagging it at the end? can someone explain lol i have a quiz tommorow

    • Scarred 3 years ago

      i guess i’m a bit late :), but 2y and 4 and are not like terms. this means they can’t be added together. this is because (y) could be anything and adding 2y and 4 could be 504 or it could be -7. this is why you have to put it in its simplest form; 2y+4. i hope this helped and you did well on your quiz

  • Micheal Scott 4 years ago

    Thank you so much! I understood your video, unlike my math class at times! ๐Ÿ™‚

  • Sasha A 4 years ago

    Thank youuuuu so muchh for your helpful vid……. lately Im struggling solving these thingss…. but now its really easy for mee….. thanks againโ™ฅ๏ธ

  • kamel hatem 4 years ago

    Thanks a ton teacher!!!

  • maria moore 4 years ago

    do a problem with 4 variables plz!

  • Christopher A. Barahona 4 years ago

    you did one step wrong

  • Shubham Pandey 4 years ago

    I love u mam

  • Sasuke Kun 4 years ago

    Hi Nancy, please make a video of Maclaurin’s series and Taylor’s series

  • Christian B 4 years ago

    You are a legend. I can’t count the number of times I didn’t fail tests last year because of your videos.

  • Tim Rubin Halcomb 4 years ago

    I remember linear algebra. That was some really bizarre but cool mathematics.
    Have you ever set up a system of equations and then converted the matrix into echelon form obtaining the answers on the right side of the equals sign? I got fast at that once, but I think I’m a little out of practice. Once, I also wrote a very cool computer programming routine that worked like a charm in most situations. Imagine a program where all you have to do is put in the known variables, and it automatically solves for the unknowns. This is a science all of its own!

  • ุฑู†ูˆุดุฉ ุงู„ุนุฑุงู‚ูŠ 4 years ago

    ุดุฑุญ ุฑูˆุญุฉ ุดูƒุฑุงุงุงุงbe love Nancy omyma form lraq๐Ÿ˜๐Ÿ˜๐Ÿ˜˜

  • MusicInspire 4 years ago

    Nancy really needs to name the “tops” and the “bottoms” for what they actually are as numerator and denominator. We should not give in to the dumbing down of students. They need to learn the terms.

    • mahjabin rashid 3 years ago

      Ok boomer

  • raj k 4 years ago

    Thank You!!!

  • Riziki Twiga 4 years ago

    you are as beautiful as your brain lvuuuu

  • Rajiv Ranjan Giri 4 years ago

    very helpful

  • Mr.Fishstick 4 years ago

    Do this. 2x+4y=-9

  • Ployzert 4 years ago

    This video gave a better understanding just like how my teacher taught you.

  • Nuclear Potato 4 years ago

    can you be my math teacher??

    • Eseel Alsammarraie 3 years ago

      my thoughts exactly

  • carlee roe 4 years ago

    Thank you !!๐Ÿ’›

  • Cool girl 4 years ago

    This was super helpful.๐Ÿ™‚
    I didn’t really understand what my teacher was saying in class and this video helped me understand.

  • Jesus Herrera 4 years ago

    I’m in love with her ๐Ÿ˜๐Ÿ˜๐Ÿ˜๐Ÿ˜

    • A M 3 years ago


    • UN Tifoso Romanista 63 Torlonia 3 years ago


  • maria andrade 4 years ago

    Hi Nancy, i am a freshman, and i missed school yesterday when my algebra 1 teacher taught this. Is there any way that i can take some tutoring lessons with you? If so how can we communicate?

  • U raaxee Caqligaaga 4 years ago

    I love you Nancy from kenya cz u help us to succeed in our future

  • Justin Oliver 4 years ago

    so simple

  • James Martin 4 years ago

    Your very helpful, but also very easy on the eyes

  • armandos so 4 years ago

    You are so cute and smart.

  • Black Kath 4 years ago

    It should be y= -2x+11

  • ใ€ŒCloud ฮฒerryใ€ 4 years ago

    Are you going to follow pemdas?

  • Jammy Peoples 4 years ago

    I still dont understand I hate math bro

  • justin sumba 4 years ago

    Oh yeah yeah

  • Kim Mervin Balbacal 4 years ago

    This really helps for periodical test

  • Zain Abden 4 years ago

    very nice figer teacher

  • franklin siguencia 4 years ago

    Omg you so good on this i wish you can be my tutor

  • Julie Schoemig 4 years ago

    You have, in a single video, shared your knowledge, clearly and with great patience, for the betterment of my incredibly frustrated and challenged mind! I am forever grateful for your talent and thoughtfulness; please keep making videos ( algebra specifically). I โ€œget-itโ€ now, thank you!

  • Andres gomez 4 years ago

    You do not sound like you know it

  • Ymnm TTL 4 years ago

    Thank you. I really appreciate your help

  • Madeleine Phipps 4 years ago

    Thank you Nancy, my professor went over so fast in class so I didnโ€™t get it but your explanation is really helpful!

  • narayanan manoharan 4 years ago

    This is much useful for me thankyou sister.

  • Piper Ryan 4 years ago

    can you have a fraction for an answer??????????????

  • Pedro Henrique 4 years ago

    very professional, you made math actually be relaxing, thats a miracle

  • Nagesh Nags 4 years ago

    Hi Nancy please make a trigonometry basic please

  • Baguett 4 years ago

    Great explaination

  • StraightGreat 4 years ago

    This is so unclear. You lost me at 6:36 ๐Ÿ™„

  • L31L4N1 4 years ago

    Thank you. I use photomath though

  • Cloakshot 4 years ago

    like this comment

  • Brandon Alexander 4 years ago

    You so fucking pretty ๐Ÿ˜ฉ

  • Sian Pii 4 years ago

    please be my Math teacher

  • Tara 4 years ago

    ahhh thank you

  • Alex Sharma 4 years ago

    Thank you this helped so much!!

  • pancakes for you 4 years ago

    can i ask something ; i know im dumb at math but.
    im on the middle of my math solving and then
    * -37x = 0 *
    i had almost got the x , but then i dont know if it will be like this
    * -37x รท37 = 0รท37 *
    i know im dumb ๐Ÿ™

  • Nano Tellez 4 years ago

    I was going to recommend this video to my class, because your explanations are so organized and clear… But then you got to the comment about the system with infinitely many solutions, where you say that -8=-8 regardless of whatever values x and y take, so any pair (x,y) is a solution. ๐Ÿ™ Not every pair would solve the system. Only those that are on the line.

    I am looking for a video where students can learn that “infinitely many solutions” is not the final answer. Instead, they need to present the solutions as a dependent pair. In your example, the answer to the question of “solving the system” would be that there are infinitely many solutions, and they are of the form (4/3+2/3y,y), or (x,3/2x-4)

    I would love it if you switched this video for one like that, because I have a feeling you would do a great job explaining it.

  • Elite Investor 4 years ago

    Thanks for the video, it really helped me so much. Keep up the excellent work girl ๐Ÿ’ช

  • SpookyTerrythan 4 years ago

    At the beginning of the the video what if the 2 was a negative? Would you add or subtract?

  • Ankit Prajapati 4 years ago

    Thanks for this video ๐Ÿ˜ƒ๐Ÿ˜ƒ๐Ÿ˜ƒ

  • Alex Kowalchuk 4 years ago

    Nancy, you made a mistake solving the second equation. X is 2Y, and Y is 1. So there is no infinite solutions, there’s only ONE.

  • just leafie 4 years ago

    Does she write backwards cause if so wow lol

  • Zaahir the pro 4 years ago

    Thanks a lot ma’am!!!!๐Ÿ’๐Ÿ’๐Ÿ’

  • Master Phenomenal 4 years ago

    She is so sexy

  • Melanie Pyron 4 years ago

    Nancy, you rock. Thanks for doing this!! BIG help

  • Sorel Johnson 4 years ago

    Are you using a mirror or writing backwards on glass?? Thanks so much!!!

    • xTAARGUS 4 years ago

      Both. She is writing normally on glass (right handed) and the recording is then mirrored.

  • FADI TELA 4 years ago

    will you marry me ?

  • zecoya 4 years ago

    screw these numbers whats your number

    • Danyella Gonzalez 4 years ago

      zecoya lmaoaooa

    • Eric Jenny Hicks 4 years ago

      just dont this is not a dating website you freakin pervert

    • Eliza Salvador 4 years ago

      Stop she is just trying to teach tf.

  • Baritazari Nsanzimfura 4 years ago

    I love you continue teaching us how to solve the problem of equation you teach us with much love

  • thamer jundi 4 years ago

    thanks for helping me be prepared for my test


    • UN Tifoso Romanista 63 Torlonia 3 years ago

      How did it go?

  • thamer jundi 4 years ago

    i subed and liked the vid okay

  • Yalini S 4 years ago

    I have a math test coming up this Tuesday and this video was really helpful. I am leaving a like…

  • Hugh Jass 4 years ago

    The elimination better would’ve been better/faster

    • Jordan Saunders 4 years ago

      Ibrahim Najm u canโ€™t always use elimination on substitution questions dumbass

  • Simon E 4 years ago

    up till 3 and i finally found a video i can understand

  • veciq 4 years ago

    wish i had teachers like this

  • Tyren Chang 4 years ago

    This helped so much thank you!!

  • Jennifer Lucas 4 years ago

    She sounds so nervous and doesn’t sound as confidence in her voice but u did help me understand thank you so much

  • sachit patil 4 years ago

    You are explaning very nicely๐Ÿ™๐Ÿป๐Ÿ™๐Ÿป …..Making hard thing very easy for me…..And you are very gorgeous and beautiful…๐Ÿ˜˜๐Ÿ˜Ž

  • vincenzo puccio 4 years ago

    Could you do my high school’s graduation commencement speech? Please.

  • soyelunicopez 4 years ago

    so pretty…

    • Eric Jenny Hicks 4 years ago

      your profile pic looks like your 10 yrs old

  • Mazen Abdelaziz 4 years ago

    je moeder

  • Chelsie Starkgaryen 4 years ago

    Thank you

  • Im_CarlosG 4 years ago

    Im sitting in a small room doing a packet of this, im super bored

  • Kobia Simon 4 years ago

    A good teacher you are

  • Dalia Saab 4 years ago

    Thank u so much

  • Serendipity 4 years ago

    This is literally the one thing that i literally cannot do!! And you helped so much you explain everything very intricately and you make it simple. Thank you so much i fr had to do this hw over 6 times

  • ReviveYouBoi 4 years ago

    Finnaly I simple way to do I found videos that legit took 20 minutes to answer 1 problem

  • Wisdom Okonkwo 4 years ago

    no wait but,i used -6x + 4y=-8 then i got y=2
    but then u used “3x-2y=4 and then urs was infinitely many solutions” how come?

  • Hu Ka 4 years ago

    What a beautiful maths teacher.

  • Deema mahmood 4 years ago

    Thanks ๐Ÿ’•

  • d mar 4 years ago

    so we should have just enough fuel for a final burn. Right?

  • Blast 4 years ago

    NancyPi thank you very much for helping me in Maths and also you are beautiful and lastly the words It’s ok if you don’t like maths but like my video (nice joke) you pulled in the last was just marvellous.๐Ÿ‘

  • Mamoon Umer Farooq 4 years ago

    Go on sis, solve those equations.

  • Potato 4 years ago

    I’m so dumb, I watched this video and I’m still so confused, I’ll just not do my homework

    • Satoru Yamada 4 years ago

      @Ya Boii Baked Potatos use Khan Academy if you don’t understand, GL

    • Potato 4 years ago

      @Satoru Yamada thanks

  • O O 4 years ago

    T H I C C

  • Eliza Salvador 4 years ago

    Thanks this video helped me a lot.

  • Cali Barre 4 years ago

    Hard Work Bet,s effort

  • NADIN MOKHTAR 4 years ago

    i have an exam tmm and this helped me alot thank you

  • Saed Mire 4 years ago

    Great, dear Nancy

  • Pray Yan 4 years ago

    ๐Ÿ™๐Ÿฝ thank youuu

  • anju kumari 4 years ago

    Mam i really liked it I’m from india

  • Master Zhao 4 years ago

    Hi Nancy! I found that this works a little easier and w/o dealing with fractions. multiply the bottom equation by 2 and u will see it works out very nicely. I always take the easiest term that will cancel out the top/bottom term to eliminate x/y. In this case u got the best of both. ๐Ÿ˜Š

  • Dean Skinner 4 years ago

    Love this channel, thank you so much

    • kxsthe 4 years ago


  • Odaro Ewere 4 years ago

    You married?!?

    • Yuumna yktv 3 years ago

      Smh I can’t. Whats wrong with boys bruh????

  • Andrew macman 4 years ago

    Ok math is cool but ur so pretty and I can’t focus๐Ÿ˜‚๐Ÿ˜‚๐Ÿ’•

    • harper 1215 3 years ago

      iron flab imagine assuming their genders

    • iron flab 3 years ago

      harper 1215 oh no not this

    • harper 1215 3 years ago

      iron flab ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚

    • Titanrex 051 3 years ago

      @Tony Rizzo I’m not sure if you are trolling but if you aren’t, would you say the same thing if they said this about a guy. Im just asking because there is a rising double standard.

    • Vikas Rai 3 years ago

      Awesome gorgeous girl

  • Xenofon Katifes 4 years ago

    I just clicked because on my phone the title of the video ended at meth ๐Ÿคฃ๐Ÿคฃ๐Ÿคฃ

  • Info Tech Kashmir Tech Kashmir 4 years ago

    You are Gorgeous and very Beautiful ๐Ÿ˜๐Ÿ˜๐Ÿ˜๐Ÿ˜˜๐Ÿ˜‹๐Ÿ˜๐Ÿ˜˜

    • Blast 4 years ago

      Let’s all ask her to dance for us

    • Eseel Alsammarraie 3 years ago

      @Blast wth ?? eww nahh

    • Yuumna yktv 3 years ago

      Your some weird Pakistani creepy man.

  • Makaila Armour 4 years ago

    Ah This explains it much better

  • Amy Valencia 4 years ago

    Thank you so much for this๐Ÿ˜ it really helped! I got the same answer as when I used the method elimination๐Ÿ’œ๐Ÿ’œ

  • Amy Valencia 4 years ago

    I just subscribed ๐Ÿ™‚

  • Nutan Shinde 4 years ago

    เค•เคพเคนเฅ€ เคชเคฃ เคถเคฟเค•เคตเคค เค†เคนเฅ‡ เคถเคฟเค• เค—เคฃเคฟเคค เคœเคฐเคพ เคชเคพเค—เคฒ

  • Vesna Uzunova 4 years ago

    This was so helpful thanks โค๏ธ

  • Da'Naisa Love 4 years ago

    You are the truth for being able to write backwards ๐Ÿ˜‚. Thanks this helped a lot though

  • Lazaro Gomez 4 years ago

    โ€œIf youโ€™re thinking of trolling my video๐Ÿ˜‚โ€

  • Yogesh Hirekar 4 years ago

    Thanks For ..

  • CRAZY TRICKS 4 years ago

    Why..u crying๐Ÿ˜ฉ

  • Neeraj Ben 4 years ago

    Thanks for learning to the equations

  • Jamila plays 4 years ago

    gall am subscribing u made a mathematicisn I literally just understood wow yayyyyyy wohooo tysmmm

  • Bobby Poly 4 years ago

    Thanx a mill, you made it so simple and easy to understand!!

  • pratibha mishra 4 years ago

    I m indian

  • Mayank yadav Y.T gaming 4 years ago

    Hello baby i luv u

    • Windex 3 years ago

      pervs ๐Ÿ™„

  • Nirupama M 4 years ago

    You deserve 1 million subs

  • Kamohelo Motaung 4 years ago

    can you please make linear with quadratic equation

  • Mona Dashti 4 years ago

    how do u write backwards omg it so hard

  • Abhinav Adhikari 4 years ago

    plz learn to speak hindi untill i cant understand something

    • Yuumna yktv 3 years ago

      Then watch a Hindi video she isn’t going to waste HER time learning something for a stranger.

  • FLETCH 4 years ago

    Never gonna need this shit after school smh

  • Roxanne Haoses 4 years ago

    Finally, you are an angel sent from above by the math gods. Thank you very much..

  • Anup Datte 4 years ago

    I m the student here… I never saw any teacher being nervous in front of listeners …. Good teaching ma’am

  • Auden Uhl 4 years ago

    For the 6x + 4y one, I got x=0 and y=-2. It works too! I’m very confused.

    • Herb Cruz 3 years ago

      In the second equation, she got x in terms of y. Then, when you take that expression (from the second equation) and plug it in for x (in the first equation), you wind up getting a true statement (anything=itself), after working out all of the arithmetic. When that occurs, there are infinitely many solutions to that equation.

  • Pen Lavits 4 years ago

    When i did part 2 by my self following the steps i was like what heck am i doing something wrong after trying it a few times i was like wow i am really messing up something so simple then i gave up and watched the rest of the video and a turns out its a special case that say/ means they can be infinitely many solutions or no solutions i honestly just learn that this could happen so glad i watch this video

  • Halloween Freak 4 years ago

    You saved my life!!!๐Ÿ˜๐Ÿ˜…

  • Rajdeep Lumay 4 years ago

    thank you so much, this video helped me a lot but what is there were eqn. that stared with 1/2(m-3n)=1

    i have no idea what i should be doing after i get y=mx+b

  • Andrew Moulton 4 years ago

    This helped me a lot thanks

  • ashok antony 4 years ago

    Beauty and brain in one place. A rare sight indeed. Thanks Nancy

    • Colonel Fanzipantzen 3 years ago

      haha i laughed

    • Sujitshanu Dilip 3 years ago

      Perfect sentence๐Ÿ˜Š

  • Kieran Donnan 4 years ago

    “That’s just not true, it’s nonsense- it’s not true”: best definition of a no solution answer. ๐Ÿ˜€

  • Yessir 4 years ago

    your voice is hot

  • Jorge Velasquez 4 years ago

    I’m taking a math class that I should have taken in high school and this was very helpful. Thank You. Also, my ADHD could not help but focus on the fact that you are a fellow lefty and you have to write backwards. Great quality video! Subscribed!

  • Obsidian Breaker 4 years ago

    I cant focus because idek how she is writing backwords๐Ÿ˜“

  • Obsidian Breaker 4 years ago

    Who ever thought of simultaneous equations is gay

  • Dark Slasher 4 years ago

    Boys summer break is almost coming just waiting to pass for my finals

  • RavenLuni 4 years ago

    Thanks for this. You only realise how much of this stuff you’ve forgotten when you need to use it.

  • Makayla Clavijo 4 years ago

    i wish she was my teacher.. dang look at her….

    • Yuumna yktv 3 years ago

      Whats that even supposed to mean….?

  • sophia lorenzo 4 years ago

    who else is confused

  • kimberly jacinto 4 years ago

    im always confused on the standard form to slope form. isnโ€™t it y=-2x+11? Someone please clarify

  • Smily DVN 4 years ago

    hey, thank you so much. The video was great, i could solve the equations but cannot solve the questions based on word problems. The equation that i create is absolutely absurd and never correct. Could you please make more videos on how to solve word problems on simple equations, ages, reverse number and stuff .

  • Octane Titan 4 years ago

    I love you Nancy

  • tushar berad show 4 years ago

    Nice voice ๐Ÿ‘Œ useful easy to me!โ€ฆ….๐ŸŒน๐ŸŒน๐ŸŒน๐Ÿ๐Ÿ˜…๐Ÿ˜…๐Ÿ˜‚๐Ÿ˜๐Ÿ˜๐Ÿคฉ

  • My_Bay_Jed 4 years ago

    I have a test on this tomorrow and I have NO IDEA what I’m doing

  • Spot light 4 years ago

    this tutorial doesn’t help me because you are so beautiful that its disturbing me i cant focus

    • Yuumna yktv 3 years ago

      I think you should stop being a creep…

  • Freaty the Dreary 4 years ago

    I knew all my confusion would be gone after watching this video, and I wasnโ€™t wrong. Thanks for helping againโ˜บ๏ธbeen watching those videos for almost four years now, saved my ass countless times

  • Mani Ram 4 years ago

    I can’t understanda mam please sum easy method you sa

  • Pravin Thapa 4 years ago

    X=2 and y=7 correct answer

  • Williams Josh 4 years ago

    The video is cool, but please if u can solve ( 2x + 5y = 33 & ( x + 3y = 19 ) using substitution method that will be great. Thanks

    • Damian Norbert 4 years ago

      Williams Josh ez bro

    • Damian Norbert 4 years ago

      x=4 ; y=5

    • Williams Josh 4 years ago

      @Damian Norbert thanks for that easy method I tried it and it works perfectly

  • Riya Kaur 4 years ago

    THANKYOU so much OMG

  • The Honda Center 4 years ago

    you make me want to learn math

  • xTAARGUS 4 years ago

    Math:iNfInItLeY mAnY sOlUtIoNs

  • dave forfav 4 years ago

    This is better then khan academy

  • kamel hatem 4 years ago

    Thank you so much teacher!

  • Rajesh singh 4 years ago

    Lovely smile

  • Zakk Poptani TV 4 years ago

    Daymn I wish I had a hot teacher like her

  • Malechai Burden 4 years ago

    thank you soooooo much you really helped me to pass math โ™ฅโ™ฅโ™ฅ

  • Chaitra Shirkol 3 years ago

    How you write from your left hand

  • Hads 3 years ago

    How long and tedious this is is really confusing me. I have 2x+7y=222 and 2x+136=6y and I canโ€™t find anything videos that are set up to help me with an problem like that. My jackass of a math teacher gave us homework the night before a final. Heโ€™s a piece of shit.

  • tasneem dawud 3 years ago

    Ur an angel

  • Hidayat Ali Boto 3 years ago


  • R dlc 3 years ago

    Life saver

  • Sam Licorish 3 years ago

    For some impressive reason, women most often seem to teach so much better than men. So many male teachers offer the easy examples. You instead chose to show the more challenging ones with fractions as well, offering a way to see the fractions’ solution when it is not obvious (as in whole number / one). You offer students a way to solve these with assurances that they too can get math done. Had I had your teaching when I was young, I might’ve even fancied myself as a modern-day Euclid. Well done, thank you.

  • young dk out 3 years ago

    Very nice videos

  • MOTIVATOR SOUND 3 years ago

    All of ur video is very helping me in my math. Last month, I got 86% for my mark. Thanks

  • sasha devillier 3 years ago

    im so distracted by the fact that she writes backwards, or at least it looks like she is :0

  • David Schriek 3 years ago

    Gosh you explain things well–thank-you!

  • Biff Bifford 3 years ago

    If you were my math teacher n high school, I would be a physicist today!

  • Abedin Abbey 3 years ago

    my god i can’t concentrate you’re really beautiful๐Ÿ˜๐Ÿ˜…

    • Tony Rizzo 3 years ago


    • Angela Mosby 3 years ago

      close your eyes

    • Abedin Abbey 3 years ago

      @Angela Mosby hahaha

  • Lynetta Alcoser 3 years ago

    Thank you so much! You are a natural teacher! Your video helped me prepare for my test!

  • Benhard Da F 3 years ago

    I love you

  • junior encyclopedia 3 years ago

    easy method thanks a lot

  • Garรจn Ian 3 years ago

    oh babeeee

  • ro king gurls 3 years ago

    After watching this video 10 times now I got it


  • Jovanni Pimentel 3 years ago

    Mode of instruction made it much easier to understand. Thank you!

  • Lct 3 years ago

    I love you

  • Rampage Gaming 3 years ago

    Thanks a million this was extremely helpful

  • arklanbk 3 years ago

    shes not writing backwards and shes not left handed, they flipped the video

  • Mjd Ilast 3 years ago

    great explanation and a beautiful accent.

  • maria bryngelson 3 years ago

    I saw this video as was scrolling through the internet for systems of equations, why because I was failing my 7 grade algebra class I saw the video a good 3 times and I turned into a calculator. thank you so much. (T_*) thank you

  • Ray Rojas 3 years ago

    any videos on gaussian elimination

  • maria bryngelson 3 years ago

    did you know if you type awesome while watching a video the red bar at the bottom changes colors

  • Retchel Newman 3 years ago


  • J M 3 years ago

    Thank god, finally a pretty math teacher and the name Nancy pi perfect. God bless you Nancy.

  • Team Valor 3 years ago

    Her voice us calm

  • Serena Nightingale 3 years ago

    Question: is it normal for a variable to be equal to a decimal? e.g. x=1.9 ?

  • prince erastus 3 years ago

    i like your math videos from Kenya

  • Samuel Roberts 3 years ago


  • deezz nutz 3 years ago

    your a goat thank u very much

  • Bob Yugojkoviki 3 years ago

    My college professors suck i dont recomend college use youtube and google thanks nancy

  • Pluto 3 years ago

    Everyone here left handed (including me) hit the like button

  • atlewis 1 3 years ago

    But 2x minus 2 is zero not -2

  • Hirun Jayawardana 3 years ago

    writing backwards is haaaaaaard

  • Norah 3 years ago

    damn she is lefty and is writting backwards!!!

    • gekyummy_YT 3 years ago

      lmao itโ€™s flipped. sheโ€™s not writing backwards

  • here i am 3 years ago

    with all regards,
    i did the last one and have a little confusion on the signs Q) Y=-X+1
    Y (place) Y=X-7
    -X+1= X-7 (1 go’s to right hand side 7+1=8)
    -2X=-8 -8/2
    (simplifying) -8/2=4 now here i am little stuck with signs its negative 8 over positive 2 now will i be getting -4 in results or +4
    X=4 or X=-4
    (Y=X-7 in place) (Y=X-7 in place)
    Y= 4-7 = -3 OR Y=-4-7 =-11
    PLEASE ANYONE WHO knows HOw To DO THIs help me

  • MisfitMavis 3 years ago

    Omg thank you girl๐Ÿ˜ญ I needed this!! Thank you a million times youโ€™re a legend!!

    • my momsphone 3 years ago

      Next upload?

    • MisfitMavis 3 years ago

      my momsphone next upload what do you mean?๐Ÿ˜‚

    • my momsphone 3 years ago

      @MisfitMavis 2 weeks without uploading

    • MisfitMavis 3 years ago

      my momsphone YEah Iโ€™m uploading tomorrow ๐Ÿ˜‚ because Iโ€™ve been busy with college ๐Ÿ™

    • my momsphone 3 years ago

      @MisfitMavis oh dam

  • Jamia Handfield 3 years ago

    I thought I’d never be able to do these. This was extremely helpful!

  • Gugsi Bubsi 3 years ago

    Where did you get that -4 ??

  • Ahmed Said 3 years ago

    I wish you are my teacher๐Ÿ’—๐Ÿ˜thank You so much SiS๐Ÿ˜…

  • Sujitshanu Dilip 3 years ago

    This was really helpful to my daughter
    Thanks a lot ๐Ÿ˜Š๐Ÿ˜Š๐Ÿ˜Š๐Ÿ™๐Ÿ‘

  • Angela Mosby 3 years ago

    who else is watching this *full volume mid test?*

    • Mr Sulphur 3 years ago

      Angela Mosby How?

    • Nyambe Glen 3 years ago


  • Updirahman Ztylesh 3 years ago


  • vivek sahu 3 years ago

    The Best teacher ever thank you Mam for this video

  • - GOD 3 years ago

    why are you so damn hot

  • KataKing8 3 years ago

    Reading backwards, writing backwards and writing lefty. Wow. Couldn’t do that in a million years.

  • Carlos Diaz 3 years ago

    Thanks Nancy! you rock!

  • Amcam Consulting 3 years ago

    Where were you when I was taking HS Algebra? You have a pleasant demeanor and your students should be grateful.

  • ayes andayes 3 years ago

    you seem like ur being held at gunpoint, are u ok?

  • IDropreflex OnU 3 years ago

    Thank you for all the help

  • Jeremiah Carr 3 years ago

    Elimination would not have worked either for the last case because of signs of positive and negative not allowing for clean multiplication

  • AshesRulerOf40Legions AllHailMe 3 years ago

    Damn, that was hard to just watch but I think I got it. Thanks so much for making these vids you might of just help me pass my finals will keep you updated if I pass ^ ^

    • my momsphone 3 years ago

      Did you pasd

  • Faze Zade 147 3 years ago

    wait in 3:30 i don’t know why you subtracted the minus two x from the eleven, i thought that you could only take it away from the x
    any help will be much appreciated

    • Sanchiv Suresh 3 years ago

      its pretty simple
      the first eqn is 2x + y = 11 and you want to isolate for y
      so you’d subtract 2x from both sides so it would be,
      2x – 2x + y = 11 – 2x
      y = 11 – 2x (2x-2x = 0 so it would 0 + y which is simply y)

    • Scarred 3 years ago

      @Sanchiv Suresh glad i’m not the only one doing this ๐Ÿ˜‰

  • queen aqsa yousuf 3 years ago

    woah! this what i was looking for thanx this helped me a lot

  • Kitzya 3 years ago

    Thats so easy ๐Ÿ˜†

  • Desmond Bangura 3 years ago

    2ร—+y=you’re an angel on earth

  • anna does things 3 years ago

    You do you write backwards

  • Tata :3 3 years ago

    TMR is my final and this is the only thing I struggle on.. so Iโ€™m so thankful I found this video you teach better than my teacher<3

  • Sugarrcookiie 3 years ago

    I have a test in a hour…. I AM CRAMMING INFO IN NY BRAIN BECUZ I NEED DIS ๐Ÿ‘€

  • Akash singh 3 years ago

    Ur so pretty i cant focus in next viedio wear mask๐Ÿ˜†๐Ÿ˜†๐Ÿ˜‚๐Ÿ˜‚

    • Elmuiz Ahmed 3 years ago

      What are you gonna do about the voice?

  • Neonik Quill 3 years ago

    Ur so good at teaching nancy i love math and also u๐Ÿ˜

  • the girl who loves maths 3 years ago

    Thank you so much Nancy. It’s so great to see a woman making such an impact in the math world. Beautifully chosen examples by the way. My class loved this video.

  • Jason Kelley 3 years ago

    Proof that the genetic lottery does exist! Congrats on your winnings Nancy! Incredibly helpful videos and I appreciate your time efforts.

  • FOR HONOR 3 years ago

    y’all telling me she was writing backwords?? NOW that is true commitment! ANd thx your helped me study for my finals thx thx thx.

  • Ahkeel Mccooty 3 years ago

    Thank you for the help, I am a new subscriber from now on!

    • Ahkeel Mccooty 3 years ago

      2020 person watching a 2018 vid :]

  • Kieran Ewanicki 3 years ago

    can you make English vids

  • Murlidhar Thakur 3 years ago

    Smajh nhi aaya pr sun kr acha lga….

  • Agatha N Fahnbulleh 3 years ago

    Thanks so much for making me understand
    I love it๐Ÿ’‹๐Ÿ’‹

  • Ricardo Saavedra 3 years ago

    Thank you.

  • Althea Maye 3 years ago

    How study without writing on your notebook

    Me: watching on youtube on how tf to solve

  • Abhishek Pillai 3 years ago

    But with question two they are just the same function. You can see this if you multiply all terms by -2 in the 2nd function. That’s why there are infinite intersections and therefore infinite solutions.

  • Akshay chouhan 3 years ago

    Is she writing in reverse direction?

  • The Conscious One 3 years ago

    Best teacher on Youtube, I mean it.

  • Michael 3 years ago

    Great video

  • Jonah Santiago 3 years ago


  • Get Roasted 3 years ago

    Aftet watching this video in class

    I still failed.

  • God Hates Fags 3 years ago

    Thank you fancyPi

  • Chaturvedi Roshan 3 years ago

    I like you and your video baby

  • britt m 3 years ago

    Thank you Nancy! I know that this might be over 2 years too late but your videos really helped me out because later in the school year I will be taking my EOC!

  • lizze lemon 3 years ago

    Can you like please be my math teacher mines a bitch ๐Ÿ™‚

  • Ben Welsh 3 years ago

    her students are blessed

  • Vector 3 years ago

    14:34 the answers i got were
    And they are correct because when you substitute them you get the correct answer! ๐Ÿค”

  • jonna escat 3 years ago

    Im Filipino who hard to understand math and i think this video can helf me so much to understand ..

  • Zainab Amin 3 years ago

    U seem nervous idk why

  • Ernestine Snyder 3 years ago

    Thank you so much; you are a lifesaver!

  • Justice For Maximilianmus 3 years ago

    This is the only one that helped me

  • Anita M 3 years ago

    hi there! do you also add graphing…

  • SnippsChannel 3 years ago

    thank you I am in eighth grade and I am using this!

  • Paige Farnam 3 years ago

    Really loved this it was so useful Thank you

  • Mark Renteria 3 years ago

    Great work!

  • Mr Sulphur 3 years ago

    10:53 Why canโ€™t we simplify that???

    • Scarred 3 years ago

      because it gets simplified later when you times it by 4. If you did it then you would get decimals which would make it way more confusing.

  • Diljeet sivia 3 years ago

    You are so hot

  • Asiya Bagwan 3 years ago

    People will come by looking at you
    Agree ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚

  • Natalia Villalobos 3 years ago

    can every youtuber/math teacher put their last name in the channel name, bc i need that for referencing and i cant find any other source ๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜‚๐Ÿ˜…

  • Swayam Siddhant Mishra 3 years ago

    U are sexy for that 1 like
    We’re Indians we can understand any topic much faster than any country in this world
    Sorry but it’s the reality
    If u want to realize u can test our strength

  • Alireza Sadeghifar 3 years ago

    The COrona virus is upon us and I’m watching this video, it was really helpful! thanks!

    • Baba Jai 3 years ago

      Are you in class 10th tell me๐Ÿ˜Š

  • Arjun Pandey 3 years ago

    thanks … keep it up …nancy๐Ÿ˜‰

  • JL L 3 years ago

    I love the way you explain math problems. don’t change ๐Ÿ™‚

  • EXTRAUDO KNIGHT 3 years ago

    i like the video but i also like that its a beautiful lady teaching me all my other maths teachers are males

  • Melvina kpandeba 3 years ago

    Honesty Nancy, if you have a school on your own. i bet you your school will be the top grade-A school ever, because one can really understand your teaching well.

  • Mirembe Miriam 3 years ago

    Cool maths thanx

  • Jose Miguel Cantu 3 years ago

    Josรฉ Miguel 1de abril 2020

  • zeiderz 101 3 years ago

    Can someone help me substitute this
    6x 9+6y= -6
    5x + y = -13

  • a n g e l 3 years ago

    tysm its hard to learn in online school and this is the only video that truly helped ๐Ÿ™‚

  • norman bowen 3 years ago

    thanks so much

  • Angel Irigoyen 3 years ago

    read this if your mom

  • HK Victor 3 years ago

    Thanks a lot!!

  • MERCURY 3 years ago


  • Angela Brown 3 years ago

    Thank you so much for taking your time to help others this video helped me out so much. Now I feel I can be successful in college algebra at jersey college.

  • Slavo 3 years ago

    Hi , please add matrix solution video

  • Shakti Sahoo 3 years ago

    Thank u for cleaning my doubt

  • Robert Witta 3 years ago

    Write better backwards than I do forwards

  • Lacy Prinzo 3 years ago

    Thank you

  • david uchenwa 3 years ago

    You’re too much!

  • Dylan Adkison 3 years ago


  • David-Joe Klotz 3 years ago

    MIT Rocks!!!

  • Tee Swervo 3 years ago

    its confirmed ill never be good at math this is really hard

  • Brandon Uszylo 3 years ago

    this video has no sound for me

  • James Carter 3 years ago

    you’re even better than Sal Khan

  • PREDATOR GAMING 3 years ago

    If only i had a teacher like you i won’t be coming 4th…..i would be 1st in my class

  • Vexter 3 years ago

    anyone know what -6=x/6 is??

  • salto de baile 3 years ago


  • Carter Hauke 3 years ago

    Jesus is Lord! He will bring you peace! Repent! He is coming soon!

  • Lucretia Lampley 3 years ago

    That u

  • Christy Saphira 3 years ago

    This is brilliant I like this

  • gagan gaganpreet 3 years ago

    Thanks di

  • Grace Schmidt 3 years ago

    Math: exists
    My brain: *explosion*

  • Rana Talha 3 years ago

    If we want to use the 2nd equation first we have to use same method

    • Ritesh Tiwari Vidyalaya 3 years ago

      Go to this channel

  • Yoohoo2949 3 years ago

    Wow, an instructor that tackles the tough cases (which are always on the homework, but never in the examples). You instruction is a breath of fresh air!

  • Monila Sharmin 3 years ago

    that long really! i can make it much more shorter and simple

  • Josiah Davis 3 years ago

    I already understand it the only reason why I watch the videos is because I have a crush on her

  • JJeffooo 3 years ago

    yo whats ya number tho

  • Frida Garza 3 years ago

    im not even paying attention im just amazed on how she can write pretty backwards and also trying to figure out what shes writing on maybe on glass? thin air? idk

    • OnlineFool 3 years ago


    • S K 3 years ago

      I assume it a piece of glass and a mirror.

  • Kuldeep Prajapati 3 years ago

    So cute ๐Ÿ˜

  • Bittu Bhatnagar 3 years ago

    U are so pretty and thanks

  • Osie Paul 3 years ago

    It is really really helpful ๐Ÿ’•๐Ÿ’•

  • Osie Paul 3 years ago


  • lana equine 3 years ago

    Thank you! I have a test on friday and this helped. My teacher doesn’t really know how to use the online learning software.

  • Ananya Suriararchchi 3 years ago

    thanks nancy

  • johnkim7905 3 years ago

    DAMN is she was my teacher I would definitely focus in this class

    • Ritesh Tiwari Vidyalaya 3 years ago

      If you want to understand the concept please visit the channel

  • Katya Roberts 3 years ago

    Thank you so much this really helped me!

  • Blood Line 3 years ago

    So my school isn’t doing the online classes, so I’ve been on Wattpad and Webtoon for the past 4 and a half months killing my brain cells (not that I’m complaining). Basically, I have to take it upon myself if I’m gonna learn, and it’s like your re-wiring my brain.

  • xxxDea_ 3 years ago

    Fun fact: your searching for this the day before the test

    • Qasim 3 years ago

      Nahhhhh, I have my final in an hour. Yeah, I’m dead ๐Ÿ‘

    • xxxDea_ 3 years ago

      @Qasim gl on ur final. Idk if ur seeing this rn cuz it says 1 hour ago but you know

    • Qasim 3 years ago

      @xxxDea_ Thanks a lot, and yeah, it’s done and I think I probs passed, yayyy ๐Ÿ™‚

  • Willium Buur 3 years ago

    i love the way you teach nancypi

  • Abhi Mahali 3 years ago

    this video is too nice

  • ZapsterZatoo 3 years ago

    Smart and beautiful lady

  • ฤŽรVลธรˆล H KHรˆล˜ 3 years ago

    Thank alot

  • Bigrai Brahma 3 years ago

    Show partial fraction decomposition please!

  • Aqleem Muhammad 3 years ago

    Thank you so much but i am still kinda confused..

  • Mehndi Khan 3 years ago

    Helo nancy mam i am from india and i like your video very much….

  • Chandrashekhar 3 years ago

    Recognize that its not easy job to write backward.u did it nice ๐Ÿ˜Š

  • Vahid Porki 3 years ago

    Thanks, I finally learnt that ๐Ÿ™‚

  • Silas Cole Thornton 3 years ago

    They just flip the video.

  • Pawan Kulhari 3 years ago

    Who else is watching this lockdown

  • Muhammed Mishal 3 years ago

    In first question at the final step why dont you take 15 to the other side and divide it with 30 it looks more easier and on the left hand side there will be only x so the result is same

  • Annmary Abraham 3 years ago

    i love how she explains it really softly , it just feels soothing to hear and understand โค๏ธ

  • Pubg Gamer 3 years ago

    Nice explanation #NANCY

  • LSL CHANNEL 3 years ago

    im focusing on the teacher๐Ÿคฃ

  • Abhishek Upadhyay 3 years ago

    Really your explanation is simple and worth learning.

  • stelamkong1 3 years ago

    Thx but I am speechless when I learned algebra and is too hard for me

  • stelamkong1 3 years ago

    I am a 7th grade

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