3m+8=m-4

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Solution for 3m+8=m-4 equation: 



3m+8=m-4

We move all terms to the left:

3m+8-(m-4)=0

We get rid of parentheses

3m-m+4+8=0

We add all the numbers together, and all the variables

2m+12=0

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

2m=-12

m=-12/2

m=-6

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