SOLUTION: Solve each system by addition 2x = 2 - y 3x + y = -1 Thanks

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Question 178872: Solve each system by addition
2x = 2 - y
3x + y = -1
Thanks
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

Arrange eqns:
2x+=+2+-+y, EQN 1
3x+%2B+y+=+-1, EQN 2
system%28-2x-y=-2%2C3x%2By=-1%29--->system%28-2x-cross%28y%29=-2%2C3x%2Bcross%28y%29=-1%2Cx=-3%29
subst.highlight%28x=-3%29 in EQN 2:
3%28-3%29%2By=-1
-9%2By=-1
y=-1%2B9
highlight%28y=8%29
we'll see the graph:

Thank you,
Jojo