-9-m=3+m+m

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



-9-m=3+m+m

We move all terms to the left:

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

We add all the numbers together, and all the variables

-m-(2m+3)-9=0

We add all the numbers together, and all the variables

-1m-(2m+3)-9=0

We get rid of parentheses

-1m-2m-3-9=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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