SOLUTION: how to solve 3x+y=5 -x+y=-7

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Question 429771: how to solve 3x+y=5 -x+y=-7
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve
3x+y=5
-x+y=-7
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Subtract and solve for "x":
4x = 12
x = 3
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Solve for "y":
-x+y = -7
-3+y = -7
y = -4
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Cheers,
Stan H.