-3m/7=21

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Solution for -3m/7=21 equation: 



-3m/7=21

We move all terms to the left:

-3m/7-(21)=0

We multiply all the terms by the denominator


-3m-21*7=0

We add all the numbers together, and all the variables

-3m-147=0

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

-3m=147

m=147/-3

m=-49

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