-31=9a+3-2a

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Solution for -31=9a+3-2a equation: 



-31=9a+3-2a

We move all terms to the left:

-31-(9a+3-2a)=0

We add all the numbers together, and all the variables

-(7a+3)-31=0

We get rid of parentheses

-7a-3-31=0

We add all the numbers together, and all the variables

-7a-34=0

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

-7a=34

a=34/-7

a=-4+6/7

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