20=a+2+8a

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Solution for 20=a+2+8a equation: 



20=a+2+8a

We move all terms to the left:

20-(a+2+8a)=0

We add all the numbers together, and all the variables

-(9a+2)+20=0

We get rid of parentheses

-9a-2+20=0

We add all the numbers together, and all the variables

-9a+18=0

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

-9a=-18

a=-18/-9

a=+2

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