SOLUTION: Solve by the elimination method. 9x-9y=18 7y-3x=-8 -3x+7y=-8 9x-9y=18 -3x+7y=-8 -9x+21y=-24 9x-9y=18 12y=-6 y=??? I really need help with this one. Thank you so much!!!

Question 201952: Solve by the elimination method.
9x-9y=18
7y-3x=-8
-3x+7y=-8
9x-9y=18
-3x+7y=-8
-9x+21y=-24
9x-9y=18
12y=-6
y=???
I really need help with this one. Thank you so much!!!
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
y=-1/2
x=1.5
take one of the equations and change so you solve for one unknow in terms of the other
9x=9y+18
x=(9y+18)/9
x=y+2
----------------
7y-3(y+2)=-8
7y-3y-6=-8
4y=-2
y=-1/2
--------------
9x=9(-1/2)+18
9x=-4.5+18
x=13.5/9
x=1.5
----------------
7(-1/2)-3(1.5)=-8
-3.5-4.5=-8
I will let you do more proof if you want
RELATED QUESTIONS
solve by elimination method 9x-9y=9... (answered by drj)

solve by elimination method 9x-9y=9... (answered by checkley77)

solve by elimination method: 9x-9y=9;... (answered by ewatrrr)

9x-9y=27 7y-3x=-11 Solve by the elimination method.. Solution? (answered by scott8148)

elimination method: 9x-9y=36... (answered by sowmya)

Solve by the elimination method. 9x-9y=27 7y-3x= -11 What is the solution of the... (answered by jojo14344)

-9x +9y= -18 -4x+7y= -14 (answered by It is costly)

solve by elimination 6x-9y=13.5... (answered by mathsmiles)

Solve by the elimination method. 6x-9y=13.5... (answered by stanbon)