SOLUTION: i am doing solving systems by elimination and i don't understand how to the problem. it is 3x-y=-2 and -2x+2y=8

SOLUTION: i am doing solving systems by elimination and i don't understand how to the problem. it is 3x-y=-2 and -2x+2y=8

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Question 589483: i am doing solving systems by elimination and i don't understand how to the problem. it is 3x-y=-2 and -2x+2y=8
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
(1) 3x-y=-2
(2) -2x+2y=8
multiply 3x-y=-2 by 2
(1a) 6x-2y=-4
add (1a) to second (2) equation
-2x+2y=8
6x-2y=-4
4x=4
x=1
substitute x=1 into any of the three equations
-2x+2y=8
-2+2y=8
add 2
2y=10
y=5
solution
x=1
y=5

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