-(a-7)=9+7a

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



-(a-7)=9+7a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-a-7a+7-9=0

We add all the numbers together, and all the variables

-8a-2=0

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

-8a=2

a=2/-8

a=-1/4

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