3m-m+1=-7

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Solution for 3m-m+1=-7 equation: 



3m-m+1=-7

We move all terms to the left:

3m-m+1-(-7)=0

We add all the numbers together, and all the variables

2m+8=0

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

2m=-8

m=-8/2

m=-4

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