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i will medal and fan plz help i do not know!
2x + y = -3 x - 2y = -4 start by multiplying the first equation by 2, and tell me what you get
ok one sec
is it 4?
no, I'm just asking you to multiply an equation by 2 just take the equation 2x + y = -3 and double everything
what is 2x*2 = ?
oh ok my bad i replacd y hold on
good. now we double y to get 2 and double -3 to get -6 so our new equation becomes 4x + 2y = -6, with me so far?
yes i am writing this down
now we have: 4x + 2y = -6 x - 2y = -4 now add the two equations together and tell me what you get
so like 4x + 2y = -6 + x - 2y = -4???
add the x's, then add the y's. 4x + x = ?
oh ok ok ok i get it
for the x's i got 5x and for the y's i got 5y
is that it?
5x is right, 5y is not.
what did i do wrong?
what is 2y - 2y = ?
oh minus... i added
and that is 0
good, now we add the numbers on the right side of the equations
-6-4 = ?
good. so 5x = 10 x = ?
*sorry, 5x = -10
good, so x = -2 now we can take one of our original equations: x - 2y = -4 and plug in x = -2 -2 - 2y = -4 y = ?
yup! so our answer is x = -2 and y = 1 we can write this as (-2,1)
oh so the answer is -2,1 but what happened to 5x?
oh wait nvm
sorry i know we solved that for 5x=10 me bad