12+a=a-8+4a

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Solution for 12+a=a-8+4a equation: 



12+a=a-8+4a

We move all terms to the left:

12+a-(a-8+4a)=0

We add all the numbers together, and all the variables

a-(5a-8)+12=0

We get rid of parentheses

a-5a+8+12=0

We add all the numbers together, and all the variables

-4a+20=0

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

-4a=-20

a=-20/-4

a=+5

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