-(a-9)=a+7

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



-(a-9)=a+7

We move all terms to the left:

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

We get rid of parentheses

-a-a+9-7=0

We add all the numbers together, and all the variables

-2a+2=0

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

-2a=-2

a=-2/-2

a=1

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