-3m+(-6)=21

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Solution for -3m+(-6)=21 equation: 



-3m+(-6)=21

We move all terms to the left:

-3m+(-6)-(21)=0

determiningTheFunctionDomain
-3m-21+(-6)=0

We add all the numbers together, and all the variables

-3m-27=0

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

-3m=27

m=27/-3

m=-9

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