SOLUTION: how do i solve this system by the addition method? x+5y=15 3x+2y = -7 thanks!

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Question 929714: how do i solve this system by the addition method?
x+5y=15
3x+2y = -7

thanks!
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the 1st eqn by -3, then add.