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

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Question 317538: Solve each system by addition
2x = 2 – y
3x + y = -1
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.2x%2By+=+2
2.3x+%2B+y+=+-1
Multiply eq. 1 by (-1) and add to eq. 2,
-2x-y%2B3x%2By=-2-1
highlight%28x=-3%29
Then use either equation to solve for y.3
2%28-3%29%2By=2
-6%2By=2
highlight%28y=8%29