3(2a+9)=-15

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Solution for 3(2a+9)=-15 equation: 



3(2a+9)=-15

We move all terms to the left:

3(2a+9)-(-15)=0

We add all the numbers together, and all the variables

3(2a+9)+15=0

We multiply parentheses

6a+27+15=0

We add all the numbers together, and all the variables

6a+42=0

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

6a=-42

a=-42/6

a=-7

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