3(m+7)=21

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Solution for 3(m+7)=21 equation: 



3(m+7)=21

We move all terms to the left:

3(m+7)-(21)=0

We multiply parentheses

3m+21-21=0

We add all the numbers together, and all the variables

3m=0

m=0/3

m=0

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