3(m+7)=81

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Solution for 3(m+7)=81 equation: 



3(m+7)=81

We move all terms to the left:

3(m+7)-(81)=0

We multiply parentheses

3m+21-81=0

We add all the numbers together, and all the variables

3m-60=0

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

3m=60

m=60/3

m=20

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