3(a+7)=-30

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Solution for 3(a+7)=-30 equation: 



3(a+7)=-30

We move all terms to the left:

3(a+7)-(-30)=0

We add all the numbers together, and all the variables

3(a+7)+30=0

We multiply parentheses

3a+21+30=0

We add all the numbers together, and all the variables

3a+51=0

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

3a=-51

a=-51/3

a=-17

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