9-(7a+5a)=-11

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Solution for 9-(7a+5a)=-11 equation: 



9-(7a+5a)=-11

We move all terms to the left:

9-(7a+5a)-(-11)=0

We add all the numbers together, and all the variables

-(+12a)+9-(-11)=0

We add all the numbers together, and all the variables

-(+12a)+20=0

We get rid of parentheses

-12a+20=0

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

-12a=-20

a=-20/-12

a=1+2/3

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