a=8a+28

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Solution for a=8a+28 equation: 



a=8a+28

We move all terms to the left:

a-(8a+28)=0

We get rid of parentheses

a-8a-28=0

We add all the numbers together, and all the variables

-7a-28=0

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

-7a=28

a=28/-7

a=-4

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