12=4a+2a

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Solution for 12=4a+2a equation: 



12=4a+2a

We move all terms to the left:

12-(4a+2a)=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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