-1m+9=3m-7

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Solution for -1m+9=3m-7 equation: 



-1m+9=3m-7

We move all terms to the left:

-1m+9-(3m-7)=0

We get rid of parentheses

-1m-3m+7+9=0

We add all the numbers together, and all the variables

-4m+16=0

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

-4m=-16

m=-16/-4

m=+4

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