You teach soooo much better than my teacher!! My teacher just gives us worksheets for a week and expects us to understand and i learned more from a 4 minute video than in a week in her class
+DatcookieGaming I had this one teacher that was really good, and she had a great teaching method the everyone understood. Then she got fired cause her teaching didn't meet the "criteria".
thank you so much for this. substitution has always been so difficult for me to understand and i have a test tomorrow, but after i watched this it’s now extremely easy. thank you so much, you’re saving my math gradesss
Bless you. I have a very important math exam coming up, and i was really stressed about this. I decided to look at these videos, and less than 2 vides later i feel like i understand everything.
math is much more than "using the pythagoras theorem" or when i grow up when am i going to use this, its all about logic and critical thinking. which is why many people value math including universities and for people to say why am i learning math its not like im going to use it i want to be a writer - i mean yeah sure you're not going to use it firsthand but you develop higher thinking skills through the process of math
It feels like whenever I go into a khan academy comment section, that its just a large time capsule of students that both, understood the subject, and don’t understand it at all. Mostly comments from years ago.
Leilani Wood solve for one of the variable in one of the equations and substitute it into the other equation. Solve for that variable and plug it into one of the equations to solve for the other variable.
I know we all are having problems with our math but when we think why are we learning this? We learn this to solve our life related problems. While, most of the people like us don't use this method b'coz we think it's hard.
Great question! 2y=y-4+7 What does -4+7 equal? It's positive 3 So simplified: 2y=y+3 Then move the y's to one side of the equal sign. Let's just move them to the left. So that means we need to move the y to the left side. Do that by subtracting y (or 1y, same thing) from both sides of the equation: 2y=y+3 -y -y 2y-y is the same thing as 2y-1y which equals 1y, or just y. So u end up with: 1y = 3 or Y = 3
but all my math H.W. problems don't have anything equal x or Y. It's just a number and it's really confusing. But thanks for making it easier to understand for the most part.
this isn't going to be answered lol by where does the 2 go in 2y? shouldn't subtracting the y from both sides leave 2y as just 2? or am I missing something?
if you get rid of the "y" at the end of the problem solving then you do NOT get y = 3; you get 2 = 3. That makes absolutely no sense. if you get rid of y, you have to bring down the 2.
Any other 7TH grader here(I'm advanced by the way, hope there was no confusion) Omg I understand no I think the only thing I had trouble with was with the variables confusing me Also my teacher says to use the equation that is solved but never showed us how to find if it was solved
Can you please explain "A mechanic sells used bikes for $7,000 and new bikes for $16,000. If a total of 17 bikes were sold for $191,000, how many of the bikes sold were used?" ?
You teach soooo much better than my teacher!! My teacher just gives us worksheets for a week and expects us to understand and i learned more from a 4 minute video than in a week in her class
Same
Tbh tho I didnt get anything from skl I just went too google and here we are axing me exams
shut up
Thanks. My teacher sucks at explaining and a 4 minute free video helped me better than SCHOOL ITSELF.
+DatcookieGaming dont blame the school, blame the teacher, there are a lot of shit teachers out there
+DatcookieGaming I had this one teacher that was really good, and she had a great teaching method the everyone understood. Then she got fired cause her teaching didn't meet the "criteria".
Alex Adams I'm not surprised. Public "education" is just a institution where they have everyone and assume that they are on the same playing field.
Noobelli omg sameee
Noobelli Your profile picture makes it only more savage
My teacher shows us how to do it ONE time then examples for a few days then new subject.
IKR
ik, this is old but same tho..
Edonkulation_HD Ask questions. I know how you feel.
Same, except we get one night
yess oh my god same
I've been learning this for a month; this is the first time it's made sense in a reasonable way. thank you.
i honestly feel like an idiot for being the only one in class who doesn't get this
lol same don't worry
it's ok
sheslostcontrol true so true
IKR😄
ok so my class leaned this than elimination and now I forgot this. test is tomorrow
Yeah I'm a junior in high school here
nice to meet you
Same lmao
Senior year, using this because teachers suck :)
ireland flood lol
6th grader, my algebra teacher assigned this for help with hw
i understand this more than what my teacher discusses, thanks!
I’m in 8th grade learning sophomore math😭 Thank you I finally understand it now
GAMEOVERBRUH 0 same
Diddo
Wait.. I feel like I know you. Do you know a Gwen?
What's an 8th grader doing learning sophomore math?
@MINYI NORTHCROSS so you're technically not an 8th grader
this didn't help that much, you should add different types of problem to give the viewers a clue of how to solve them in my opinion
True, but he's teaching the main concept of substitution
Simple questions.. no one ever goes over the hard ones. Awesome
you are just an idoit 🗿
THANK YOU
I was stuck trying to do my math homework, and this video beautifully explained everything so thaaaank you so much
When are we going to use this in real life????????????????????? like Fr
+Evelyn Snowden Ikr lol
Same lol
You don’t, that’s why a lot of people find math hard, they never remember what there doing because there only doing it in the classrooms
I always wonder the same thing
If you go into an accounting business you will use this
God ...when my teacher explained it i could not understand 1 word, but you guys, i just wanna say thanks for this dudes. y'all ROCK!!!
thank you so much for this. substitution has always been so difficult for me to understand and i have a test tomorrow, but after i watched this it’s now extremely easy. thank you so much, you’re saving my math gradesss
... Now i know my teacher i terrible. You make it look so easy.
Bless you. I have a very important math exam coming up, and i was really stressed about this. I decided to look at these videos, and less than 2 vides later i feel like i understand everything.
@impdok
MS Paint, really basic stuff. He also uses Camtasia Recorder ($200) + a Wacom Bamboo Tablet ($80) on a PC.
Thank you, i had no idea what the teacher was saying at school but watching this video I understand now!
math is much more than "using the pythagoras theorem" or when i grow up when am i going to use this, its all about logic and critical thinking. which is why many people value math including universities and for people to say why am i learning math its not like im going to use it i want to be a writer - i mean yeah sure you're not going to use it firsthand but you develop higher thinking skills through the process of math
When your teacher doesn't even teach you for your exam and tells you to go on videos instead
It feels like whenever I go into a khan academy comment section, that its just a large time capsule of students that both, understood the subject, and don’t understand it at all. Mostly comments from years ago.
1:54 For those who don't get it : He subtracted 2y-y which is equal to 2y - 1y = 1y and obviously the 1 is 1visible so...
Thats exactly what he didnt go through which made the whole thing confusing
this actually helped so much thanks alot Khan!!
Anyone here Attention Deficit and can't pay attention, like, at all? :')
I learned more in a 4 minute video than in a week of class. My math teacher is Khan.
Joseph same dude nit even joking i told my teacher that in front of the whole class and everyone was laughing
how do i solve this??
2x-y=17 x-y=10
Might be wrong. x=9
Leilani Wood solve for one of the variable in one of the equations and substitute it into the other equation. Solve for that variable and plug it into one of the equations to solve for the other variable.
^^ Two types of people
Really good stuff from what I heard in this video. But maybe take in mind the people who are colour blind and can't see some of this stuff properly...
My accelerated math teacher just confused everyone in the class... I’ll have to show this to my friends so we’re not lost anymore 😁.
I am a mauritian thanks💖
You are a math wizard man
Nobody told me I could just -x when theres 2x I always tried to devide by 2 this makes my life 100% simpler
thank you so much for this video!!!!! yay! now im not going to fail my test!!!!
theawesomeone551 did u fail?
Oh my goodnessss thank you so much, this makes so much more sense..I have a math quiz coming up on this...I really hope I do okay!
very easy to understand :) very hard time learning it with someone else bu this video makes it way easier
How does this man do this with a mouse
THAT'S WHAT I THOUGHT TO
I feel dumb to still not get it even though he is explaining it good😭
mendez ! Take it in bite sizes and pause the video as you go along and re-watch as needed.
Say you have a problem like that, and it's a multiple choice question and it gives you answers to choose from. Would plugging each option in work too?
Hey sorry I don’t understand what happened at 1:58. How does 2y/-y become y?😅
He Just did subtraction 2y - y = y
i got an exam tmrw abt this, just saved my life, XD gr8 vid!
Thanks a bunch brother, working with variables can be confusing for me but I got it now 👍
You are awesome...i finally understand it. Yay!
What program are you using to write the equations on?
THANK YOU. I have exams tomorrow and this is part of it. I didn't get it at all.
wow u r a really good explainer. mhm that is osm sauce.
I know we all are having problems with our math but when we think why are we learning this? We learn this to solve our life related problems. While, most of the people like us don't use this method b'coz we think it's hard.
well...when you got 2y=3, didn't you hae to make it so theres only a variable...so divide 3 by 2?
Alternative answers : x = -5 and y = -1
THANK GOD FOR KHAN ACADEMY
Quarantine homeschool for me watching these a lot
I can finally understand!!!!! thank you!!!!
cheers helped me understand better
You just saved my entire year bro🙏🙏🙏
You teach better than my teacher
what software was used for this presentation? I'm a college instructor, so i'm very interested ^_^
impdok look above
Bro when he put it into one problem my mind was blown like bro it's this easy man
Thanks a bunch, this is great study for cramming ;)
THANK YOU SO MUCH :)
Comments are: You explain better than my teacher and only in four minutes 💀💀
Thank you so much. Don't know what would have happen if you weren't on RUclips
:D
when your teacher gives up teaching and just puts one of these vids on lol
Thank you khan academy.
I don’t get how u got +3 from 2y=y-4+7? Can someone explain
If you simplify 2y=y-4+7, it will be 2y=y+3 (-4 + 7 = 3)
Great question!
2y=y-4+7
What does -4+7 equal? It's positive 3
So simplified:
2y=y+3
Then move the y's to one side of the equal sign. Let's just move them to the left. So that means we need to move the y to the left side. Do that by subtracting y (or 1y, same thing) from both sides of the equation:
2y=y+3
-y -y
2y-y is the same thing as 2y-1y which equals 1y, or just y. So u end up with:
1y = 3 or
Y = 3
Am i just dumb or am i not getting anything out of this
i dont get it.
I was so lost in my math class thanks I understand now
Damn this was helpful
6 years late but thanks
Thanks so much teacher
Cool editting
but all my math H.W. problems don't have anything equal x or Y. It's just a number and it's really confusing. But thanks for making it easier to understand for the most part.
if there are no pronumerals, they're not equations
So glad I waited until college to learn what is apparently 8th grade math
My nephew is in 7th learning this, and he doesn’t understand it well so i think your fine learning it in college 😂
I still dont get it
this isn't going to be answered lol by where does the 2 go in 2y? shouldn't subtracting the y from both sides leave 2y as just 2? or am I missing something?
my teacher explained this a lot differently but it still has the same concept and gives the same answer
Thank you so much
Can someone help my question is -4x + 5y = 40
X = 2y - 13
I understood up to the point where he got to x
Don't UNDERSTAND!!!!!
😣😣😣
good tutorial
I thought this was hard in year 2... Now I'm thinking, where was khan academy back then???
THANK YOU SO MUCH
8th grade, I’m starting college and I still need this 😭
if you get rid of the "y" at the end of the problem solving then you do NOT get y = 3; you get 2 = 3. That makes absolutely no sense. if you get rid of y, you have to bring down the 2.
jane doe no he subtracted 1 y from both sides. 2y-1y=y.
Bro I have a test tmw THXXXXXXXXXX
wouldnt you get 2 at 2:09 ?? instead of y???
gosh, thank you so much
Saved me thank you
Danke also this so imp for physic ❤29/11/2023
thanks
i dont understand i dont think i ever will
Name of the program pleasee !))
what did they use to record video
where did the 2 in the 2y go..
Mine is y=-3x
Y=6x-9
This makes me hate my teacher even more. Thanks man! Great video!
i didn't really understand it
me too,
well it's math
Me who's in high school doing homework using this:
Any other 7TH grader here(I'm advanced by the way, hope there was no confusion)
Omg I understand no I think the only thing I had trouble with was with the variables confusing me
Also my teacher says to use the equation that is solved but never showed us how to find if it was solved
So I guess we’re just a bunch of 14 year olds that didn’t pay attention in class and are now here
naw fam im 14 and 1/2
Can you please explain "A mechanic sells used bikes for $7,000 and new bikes for $16,000. If a total of 17 bikes were sold for $191,000, how many of the bikes sold were used?" ?