SOLUTION: Solve the following pairs simultaneous equations. x - y = 2 x + y = 1

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Question 855180: Solve the following pairs simultaneous equations.
x - y = 2
x + y = 1
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Add them together to eliminate y.
x-y%2Bx%2By=2%2B1
2x=3
x=3%2F2
Then use either equation to solve for x.
x-y=2
3%2F2-y=2
-y=4%2F2-3%2F2
-y=1%2F2
y=-1%2F2