SOLUTION: 3x+9y=18 6x_9y=-72 Solve by using elimination method?

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Question 376140: 3x+9y=18
6x_9y=-72
Solve by using elimination method?

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
6x_9y=-72
I don't know what that means.

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