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.

Follow me on Instagram! https://instagram.com/mathnancy

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For how to solve a system of linear equations with the ELIMINATION METHOD, jump to: https://youtu.be/XOJgzW4P7T8

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: http://nancypi.com

Nice way to explain

Thanks

Hey Nancy please make video on matrices and determinants

Matresses and Detergents

@Gabriel Paulo Nginhena Gabita hahhahaha lol

Coming out with all these videos before my finals bless you

Are u in college doing this? Or highschool

@Krystian Murdzek same

i would just do linear algebra and matlab lol

NANCY, we need integrals plz

1080p πππ

Jeez your fucking gorgeous.

I love how u lay things out!

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

how can you do

x times y ?

in the 3rd one last example……

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!

Which number did she not write in the video?

Answer : 9

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!

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

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

Ronald Jensen Thank you!

You’re the best nancy

Nancy, thank you very much. Good video. βΊ

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

Recognized how hard it is to write backwards……

ThePunisher π

IQ 10000

she’s an MIT grad. She knows tech stuff

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

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

“you might not like math but you can like my videos”π

ππ

that acc made me laugh out loud lmao

so true

Lmao

Hahha^2

Nice Nancy pi

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

this was so helpful thank you so much!!

Thank you si muchπ

You are the best π

You Make learning easy..ππ

U make math easier keep it upπ

omg stalp with the cringy endingggg

I agree

you r my crush

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

Super grateful!!

NancyPi do you have videos solving system of βlinearβ equations using matrices?

Your videos help so much because you are easy to understand

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

Juno Award

Just use photomath lol

Or mathwayππ But good

Video, no liar

i got suspended for using it in a test

@Danial Syafiq Yo mom gay

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!

Armyyyyyπππππ

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

giiiiiirl you helped so much, thanks!!!

True

Hii

You rock

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

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

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.

i finally learned it

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

Iβve been looking for one with fractions for ever, no video ever goes over them

yuh tooooo stupidddd

This is great and so helpful! Thank you for making this π

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

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

INFINATELY MANY SOLUTIONS!!!!! THANK YOU VERY MUCH

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

khan academy sucks

Please can you make more videos about logarithm?

tnx make video about elimination method and graphing

Best tutorial ever. Thanks Nancy

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

Aye Iβm watching this in class

Aye Iβm watching this in class lmao shits wild

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

Thank you for this, doing math assignments that are late because I didnβt know how to do it, but thanks to you I do nowβ€οΈ

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

Thicc

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!

I love her bros

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. π π

Vivek Himraj uhhh the fuck dude πππ

I LOVE THE WAY YOUR DOING NANCY ..YOUR HELPING SO MUCH.. THANK YOU SO MUCH.. PLS DO MORE VIDEOS..

You’re*

@αΊrΕ«ttΔ grammar police lmao

Ohh thanks I understand my lesson from you β€οΈβ€οΈβ€οΈβ€οΈ

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

anyone from CALC ?

Milay Anime Do i know u ?

Iβm doing this in 7th grade

this video was very helpful

Omg. U fRICKKING SAVED MY LIFE U TEACH SO MUCH BETTER THAN MY TEACHER OMG GOD BLESSED U IM FINALLY NOT STRESSED ANYMORE

thank you so much your so helpful better than my teacher

I wish you were my teacher

Can u just be my teacher please π

Love the video you make everything make sense @Nancy pi

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

This is helpful Nancy thank you

How does she write backwards what a legend.

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

This made so much sense! My math teacher never showed us how to do these types of problems and he teaches too fast. Thankyou!β€οΈππ

YOU HAVE EARNED A SUBSCRIVER

This is confusing but easy at the same time ??

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

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

I understood nothing because you were speaking and not showing examplesπ

Dislike button works

The fuck? The whole video is her showing examples

Ur So hotβ€οΈ

I wish you were my teacher in school. Thank you so muchπYou helped me more than you know.

Hi Nancy

What about this one

2/3x + y = 14/3

4/5x – 3/4y = -10

Thank you

y = -92/5 x = 77/2

OH MY GOD THANK YOU SO MUCH BEEN STUCK FOR SUCH A LONG TIME!!!!

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

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

Thank you so much! I understood your video, unlike my math class at times! π

Thank youuuuu so muchh for your helpful vid……. lately Im struggling solving these thingss…. but now its really easy for mee….. thanks againβ₯οΈ

Thanks a ton teacher!!!

do a problem with 4 variables plz!

you did one step wrong

I love u mam

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

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

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!

Ψ΄Ψ±Ψ Ψ±ΩΨΨ© Ψ΄ΩΨ±Ψ§Ψ§Ψ§Ψ§be love Nancy omyma form lraqπππ

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.

Ok boomer

Thank You!!!

you are as beautiful as your brain lvuuuu

very helpful

Do this. 2x+4y=-9

4x+7y=-3

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

can you be my math teacher??

my thoughts exactly

Thank you !!π

This was super helpful.π

I didn’t really understand what my teacher was saying in class and this video helped me understand.

I’m in love with her ππππ

….work

Work

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?

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

so simple

Your very helpful, but also very easy on the eyes

You are so cute and smart.

It should be y= -2x+11

Are you going to follow pemdas?

I still dont understand I hate math bro

Oh yeah yeah

This really helps for periodical test

very nice figer teacher

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

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 βget-itβ now, thank you!

You do not sound like you know it

Thank you. I really appreciate your help

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

This is much useful for me thankyou sister.

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

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

Hi Nancy please make a trigonometry basic please

Great explaination

This is so unclear. You lost me at 6:36 π

Thank you. I use photomath though

like this comment

You so fucking pretty π©

please be my Math teacher

ahhh thank you

Thank you this helped so much!!

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 Γ·37 = 0Γ·37 *

i know im dumb π

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. π 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.

Thanks for the video, it really helped me so much. Keep up the excellent work girl πͺ

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

Thanks for this video πππ

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.

Does she write backwards cause if so wow lol

Thanks a lot ma’am!!!!πππ

She is so sexy

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

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

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

will you marry me ?

screw these numbers whats your number

zecoya lmaoaooa

just dont this is not a dating website you freakin pervert

Stop she is just trying to teach tf.

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

thanks for helping me be prepared for my test

π

How did it go?

i subed and liked the vid okay

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

The elimination better would’ve been better/faster

Ibrahim Najm u canβt always use elimination on substitution questions dumbass

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

wish i had teachers like this

This helped so much thank you!!

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

You are explaning very nicelyππ»ππ» …..Making hard thing very easy for me…..And you are very gorgeous and beautiful…ππ

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

so pretty…

your profile pic looks like your 10 yrs old

je moeder

Thank you

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

A good teacher you are

Thank u so much

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

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

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?

What a beautiful maths teacher.

Thanks π

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

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.π

Go on sis, solve those equations.

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

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

@Satoru Yamada thanks

T H I C C

Thanks this video helped me a lot.

Hard Work Bet,s effort

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

Great, dear Nancy

ππ½ thank youuu

Mam i really liked it I’m from india

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. π

Love this channel, thank you so much

aye

You married?!?

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

Ok math is cool but ur so pretty and I can’t focusπππ

iron flab imagine assuming their genders

harper 1215 oh no not this

iron flab πππππππ

@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.

Awesome gorgeous girl

I just clicked because on my phone the title of the video ended at meth π€£π€£π€£

You are Gorgeous and very Beautiful πππππππ

Let’s all ask her to dance for us

@Blast wth ?? eww nahh

Your some weird Pakistani creepy man.

Ah This explains it much better

Thank you so much for thisπ it really helped! I got the same answer as when I used the method eliminationππ

I just subscribed π

ΰ€ΰ€Ύΰ€Ήΰ₯ ΰ€ͺΰ€£ ΰ€Άΰ€Ώΰ€ΰ€΅ΰ€€ ΰ€ΰ€Ήΰ₯ ΰ€Άΰ€Ώΰ€ ΰ€ΰ€£ΰ€Ώΰ€€ ΰ€ΰ€°ΰ€Ύ ΰ€ͺΰ€Ύΰ€ΰ€²

This was so helpful thanks β€οΈ

You are the truth for being able to write backwards π. Thanks this helped a lot though

βIf youβre thinking of trolling my videoπβ

Thanks For ..

Why..u cryingπ©

Thanks for learning to the equations

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

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

I m indian

Hello baby i luv u

pervs π

You deserve 1 million subs

can you please make linear with quadratic equation

how do u write backwards omg it so hard

plz learn to speak hindi untill i cant understand something

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

Never gonna need this shit after school smh

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

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

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

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.

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

You saved my life!!!ππ

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

3(m+4n)=-12

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

This helped me a lot thanks

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

haha i laughed

Perfect sentenceπ

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

your voice is hot

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!

I cant focus because idek how she is writing backwordsπ

Who ever thought of simultaneous equations is gay

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

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

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

Whats that even supposed to mean….?

who else is confused

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

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 .

I love you Nancy

Nice voice π useful easy to me!β¦….πΉπΉπΉππ π ππππ€©

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

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

I think you should stop being a creep…

I knew all my confusion would be gone after watching this video, and I wasnβt wrong. Thanks for helping againβΊοΈbeen watching those videos for almost four years now, saved my ass countless times

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

X=2 and y=7 correct answer

Hi

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

Williams Josh ez bro

x=4 ; y=5

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

THANKYOU so much OMG

you make me want to learn math

Nobody:

Math:iNfInItLeY mAnY sOlUtIoNs

This is better then khan academy

Thank you so much teacher!

Lovely smile

Daymn I wish I had a hot teacher like her

thank you soooooo much you really helped me to pass math β₯β₯β₯

How you write from your left hand

How long and tedious this is is really confusing me. I have 2x+7y=222 and 2x+136=6y and I canβt 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. Heβs a piece of shit.

Ur an angel

Thanks

Life saver

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.

Very nice videos

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

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

Gosh you explain things well–thank-you!

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

my god i can’t concentrate you’re really beautifulππ

weirdo

close your eyes

@Angela Mosby hahaha

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

I love you

easy method thanks a lot

oh babeeee

After watching this video 10 times now I got it

Maybe…

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

I love you

Thanks a million this was extremely helpful

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

great explanation and a beautiful accent.

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

any videos on gaussian elimination

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

Confused

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

Her voice us calm

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

i like your math videos from Kenya

HOW ARE YOU WRITING IN THIN AIR!!!!!

your a goat thank u very much

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

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

π

But 2x minus 2 is zero not -2

writing backwards is haaaaaaard

damn she is lefty and is writting backwards!!!

lmao itβs flipped. sheβs not writing backwards

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)

-X=X-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

Omg thank you girlπ I needed this!! Thank you a million times youβre a legend!!

Next upload?

my momsphone next upload what do you mean?π

@MisfitMavis 2 weeks without uploading

my momsphone YEah Iβm uploading tomorrow π because Iβve been busy with college π

@MisfitMavis oh dam

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

Where did you get that -4 ??

I wish you are my teacherππthank You so much SiSπ

This was really helpful to my daughter

Thanks a lot πππππ

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

Angela Mosby How?

Wtf??π

Γ-4y=3

2Γ+5y=3

The Best teacher ever thank you Mam for this video

why are you so damn hot

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

Thanks Nancy! you rock!

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

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

Thank you for all the help

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

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 ^ ^

Did you pasd

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

XD

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)

@Sanchiv Suresh glad i’m not the only one doing this π

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

Thats so easy π

2Γ+y=you’re an angel on earth

You do you write backwards

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

I have a test in a hour…. I AM CRAMMING INFO IN NY BRAIN BECUZ I NEED DIS π

Ur so pretty i cant focus in next viedio wear maskππππ

What are you gonna do about the voice?

Ur so good at teaching nancy i love math and also uπ

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.

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

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.

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

2020 person watching a 2018 vid :]

can you make English vids

Smajh nhi aaya pr sun kr acha lga….

Thanks so much for making me understand

I love itππ

Thank you.

How study without writing on your notebook

Me: watching on youtube on how tf to solve

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.

Is she writing in reverse direction?

Best teacher on Youtube, I mean it.

Great video

Spoiled

Aftet watching this video in class

I still failed.

Thank you fancyPi

I like you and your video baby

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!

Can you like please be my math teacher mines a bitch π

her students are blessed

14:34 the answers i got were

X=1.3

Y=-0.05

And they are correct because when you substitute them you get the correct answer! π€

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

U seem nervous idk why

Thank you so much; you are a lifesaver!

This is the only one that helped me

hi there! do you also add graphing…

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

Really loved this it was so useful Thank you

Great work!

10:53 Why canβt we simplify that???

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.

You are so hot

People will come by looking at you

Agree πππ

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 ππππ

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

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

Are you in class 10th tell meπ

thanks … keep it up …nancyπ

I love the way you explain math problems. don’t change π

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

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.

Cool maths thanx

JosΓ© Miguel 1de abril 2020

Can someone help me substitute this

6x 9+6y= -6

5x + y = -13

tysm its hard to learn in online school and this is the only video that truly helped π

thanks so much

read this if your mom

Thanks a lot!!

nice

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.

Hi , please add matrix solution video

Thank u for cleaning my doubt

Write better backwards than I do forwards

Thank you

You’re too much!

Thanks!!

MIT Rocks!!!

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

this video has no sound for me

you’re even better than Sal Khan

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

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

MALE ZABOUR

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

That u

This is brilliant I like this

Thanks di

Math: exists

My brain: *explosion*

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

Go to this channel

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!

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

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

yo whats ya number tho

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

editing….

I assume it a piece of glass and a mirror.

So cute π

U are so pretty and thanks

It is really really helpful ππ

Best

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

thanks nancy

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

If you want to understand the concept please visit the channel

Thank you so much this really helped me!

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.

Thanks!

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

Nahhhhh, I have my final in an hour. Yeah, I’m dead π

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

@xxxDea_ Thanks a lot, and yeah, it’s done and I think I probs passed, yayyy π

i love the way you teach nancypi

this video is too nice

Smart and beautiful lady

Thank alot

Show partial fraction decomposition please!

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

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

Recognize that its not easy job to write backward.u did it nice π

Thanks, I finally learnt that π

They just flip the video.

Who else is watching this lockdown

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

i love how she explains it really softly , it just feels soothing to hear and understand β€οΈ

Nice explanation #NANCY

im focusing on the teacherπ€£

Really your explanation is simple and worth learning.

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

I am a 7th grade