3(m+1)=-18

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Solution for 3(m+1)=-18 equation: 



3(m+1)=-18

We move all terms to the left:

3(m+1)-(-18)=0

We add all the numbers together, and all the variables

3(m+1)+18=0

We multiply parentheses

3m+3+18=0

We add all the numbers together, and all the variables

3m+21=0

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

3m=-21

m=-21/3

m=-7

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