8m+7m=-12+5m+7m

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Solution for 8m+7m=-12+5m+7m equation: 



8m+7m=-12+5m+7m

We move all terms to the left:

8m+7m-(-12+5m+7m)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

15m-(12m-12)=0

We get rid of parentheses

15m-12m+12=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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