9m-8=-4m+31

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Solution for 9m-8=-4m+31 equation: 



9m-8=-4m+31

We move all terms to the left:

9m-8-(-4m+31)=0

We get rid of parentheses

9m+4m-31-8=0

We add all the numbers together, and all the variables

13m-39=0

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

13m=39

m=39/13

m=3

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