7-(a+2)=9+a

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Solution for 7-(a+2)=9+a equation: 



7-(a+2)=9+a

We move all terms to the left:

7-(a+2)-(9+a)=0

We add all the numbers together, and all the variables

-(a+2)-(a+9)+7=0

We get rid of parentheses

-a-a-2-9+7=0

We add all the numbers together, and all the variables

-2a-4=0

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

-2a=4

a=4/-2

a=-2

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