-3m-4(2m+3)=21

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Solution for -3m-4(2m+3)=21 equation: 



-3m-4(2m+3)=21

We move all terms to the left:

-3m-4(2m+3)-(21)=0

We multiply parentheses

-3m-8m-12-21=0

We add all the numbers together, and all the variables

-11m-33=0

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

-11m=33

m=33/-11

m=-3

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