-(a-9)=3a+17.

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Solution for -(a-9)=3a+17. equation: 



-(a-9)=3a+17.

We move all terms to the left:

-(a-9)-(3a+17.)=0

We add all the numbers together, and all the variables

-(a-9)-(3a+17)=0

We get rid of parentheses

-a-3a+9-17=0

We add all the numbers together, and all the variables

-4a-8=0

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

-4a=8

a=8/-4

a=-2

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