SOLUTION: 1)-x+y=3 2x-2y=6

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Question 282721: 1)-x+y=3
2x-2y=6
Answer by richwmiller(17219) About Me  (Show Source):
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1)-x+y=3
2x-2y=6
double #1
-2x+2y=6
2x-2y=6
add
0=12
no solution.