-15+7m=8m+4m

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Solution for -15+7m=8m+4m equation: 



-15+7m=8m+4m

We move all terms to the left:

-15+7m-(8m+4m)=0

We add all the numbers together, and all the variables

7m-(+12m)-15=0

We get rid of parentheses

7m-12m-15=0

We add all the numbers together, and all the variables

-5m-15=0

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

-5m=15

m=15/-5

m=-3

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