3(7a-7)=-147

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Solution for 3(7a-7)=-147 equation: 



3(7a-7)=-147

We move all terms to the left:

3(7a-7)-(-147)=0

We add all the numbers together, and all the variables

3(7a-7)+147=0

We multiply parentheses

21a-21+147=0

We add all the numbers together, and all the variables

21a+126=0

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

21a=-126

a=-126/21

a=-6

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