3(a+3)=-18

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Solution for 3(a+3)=-18 equation: 



3(a+3)=-18

We move all terms to the left:

3(a+3)-(-18)=0

We add all the numbers together, and all the variables

3(a+3)+18=0

We multiply parentheses

3a+9+18=0

We add all the numbers together, and all the variables

3a+27=0

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

3a=-27

a=-27/3

a=-9

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