SOLUTION: 2x-y=-3 x+y=12

Question 1029419: 2x-y=-3
x+y=12
Found 2 solutions by Fombitz, Boreal:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Add the equations together to eliminate y.

Solve for .
Then use either equation to solve for .
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
2x-y=3
x+y=12
add them and the y's disappear
3x=15
x=5
substitute in the second
5+y=12
y=7
(5,7)
Check with the other equaion
2(5)-7=3
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