-15=7+2m

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Solution for -15=7+2m equation: 



-15=7+2m

We move all terms to the left:

-15-(7+2m)=0

We add all the numbers together, and all the variables

-(2m+7)-15=0

We get rid of parentheses

-2m-7-15=0

We add all the numbers together, and all the variables

-2m-22=0

We move all terms containing m to the left, all other terms to the right

-2m=22

m=22/-2

m=-11

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