1+7a+6-13=6a+3a

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Solution for 1+7a+6-13=6a+3a equation: 



1+7a+6-13=6a+3a

We move all terms to the left:

1+7a+6-13-(6a+3a)=0

We add all the numbers together, and all the variables

7a-(+9a)+1+6-13=0

We add all the numbers together, and all the variables

7a-(+9a)-6=0

We get rid of parentheses

7a-9a-6=0

We add all the numbers together, and all the variables

-2a-6=0

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

-2a=6

a=6/-2

a=-3

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