3(m+3)=4m-12

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Solution for 3(m+3)=4m-12 equation: 



3(m+3)=4m-12

We move all terms to the left:

3(m+3)-(4m-12)=0

We multiply parentheses

3m-(4m-12)+9=0

We get rid of parentheses

3m-4m+12+9=0

We add all the numbers together, and all the variables

-1m+21=0

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

-m=-21

m=-21/-1

m=+21

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