7(m+9)=21

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Solution for 7(m+9)=21 equation: 



7(m+9)=21

We move all terms to the left:

7(m+9)-(21)=0

We multiply parentheses

7m+63-21=0

We add all the numbers together, and all the variables

7m+42=0

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

7m=-42

m=-42/7

m=-6

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