-7m+7=21

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Solution for -7m+7=21 equation: 



-7m+7=21

We move all terms to the left:

-7m+7-(21)=0

We add all the numbers together, and all the variables

-7m-14=0

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

-7m=14

m=14/-7

m=-2

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