12=6a-7+7

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Solution for 12=6a-7+7 equation: 



12=6a-7+7

We move all terms to the left:

12-(6a-7+7)=0

We add all the numbers together, and all the variables

-(+6a)+12=0

We get rid of parentheses

-6a+12=0

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

-6a=-12

a=-12/-6

a=+2

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