7-7m=-12+7-2m-8m

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Solution for 7-7m=-12+7-2m-8m equation: 



7-7m=-12+7-2m-8m

We move all terms to the left:

7-7m-(-12+7-2m-8m)=0

We add all the numbers together, and all the variables

-7m-(-10m-5)+7=0

We get rid of parentheses

-7m+10m+5+7=0

We add all the numbers together, and all the variables

3m+12=0

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

3m=-12

m=-12/3

m=-4

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