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) (Show Source): You can put this solution on YOUR website!
solve
3x+y=5
-x+y=-7
---
Subtract and solve for "x":
4x = 12
x = 3
----
Solve for "y":
-x+y = -7
-3+y = -7
y = -4
=============
Cheers,
Stan H.
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