3(a+7)=-3

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



3(a+7)=-3

We move all terms to the left:

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

We add all the numbers together, and all the variables

3(a+7)+3=0

We multiply parentheses

3a+21+3=0

We add all the numbers together, and all the variables

3a+24=0

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

3a=-24

a=-24/3

a=-8

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