Solving Linear Systems by Substitution. Created by Sal Khan.

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This helps so much. Thank you khan academy!!!

raja

I need to know how to do this with the equation written in slope-intercept form

thank the Lord this helped a lot

it’s 2 in the morning and I’m studying last minute for a test I have first period…

what do you do if you have 9y=-18

thank you so much, it was immensely helpful

Thank you so much!!!

help

my problem had the 2 variables on different sides

why cant we just learn this directly instead of going througj graphing before this? its so annoying

I dont get it, its probably not you but someone please help. I have a quiz on this tommorow

simplest video on this on youtube thank you so much!!!!

on the step 27-6y+5y=20

how did you get -y?

wouldnt it be 11y? im confused

Why cant my teacher just show these videos! It helped so much.

ninja

He multiplied by -1 because variables can never be negative for those wondering

why do i have to learn this if I’ll never use it in real life

I wish he was my math teacher

I HATE MATH

i dont understand a sentence that came out of his mouth

For some reason it’s funny to me that he refers to the x=9-2y as “this thing” 😛 2:00