-6m+(-3m)=81

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Solution for -6m+(-3m)=81 equation: 



-6m+(-3m)=81

We move all terms to the left:

-6m+(-3m)-(81)=0

We get rid of parentheses

-6m-3m-81=0

We add all the numbers together, and all the variables

-9m-81=0

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

-9m=81

m=81/-9

m=-9

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