3(m+1)=-9

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Solution for 3(m+1)=-9 equation: 



3(m+1)=-9

We move all terms to the left:

3(m+1)-(-9)=0

We add all the numbers together, and all the variables

3(m+1)+9=0

We multiply parentheses

3m+3+9=0

We add all the numbers together, and all the variables

3m+12=0

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

3m=-12

m=-12/3

m=-4

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