-9(7-a)=108

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Solution for -9(7-a)=108 equation: 



-9(7-a)=108

We move all terms to the left:

-9(7-a)-(108)=0

We add all the numbers together, and all the variables

-9(-1a+7)-108=0

We multiply parentheses

9a-63-108=0

We add all the numbers together, and all the variables

9a-171=0

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

9a=171

a=171/9

a=19

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