SOLUTION: how do you solve linear systems by adding

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Question 251185: how do you solve linear systems by adding

Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
3X-4Y=12
2X+4Y=-2 NOW ADD.
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5X+0=10
5X=10
X=10/5
X=2 ANS.
3*2-4Y=12
6-4Y=12
-4Y=12-6
-4Y=6
Y=6/-4
Y=-1.S ANS.
PROOF:
2*2+4*-1.5=-2
4-6=-2
-2=-2