20-5a=2+a

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Solution for 20-5a=2+a equation: 



20-5a=2+a

We move all terms to the left:

20-5a-(2+a)=0

We add all the numbers together, and all the variables

-5a-(a+2)+20=0

We get rid of parentheses

-5a-a-2+20=0

We add all the numbers together, and all the variables

-6a+18=0

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

-6a=-18

a=-18/-6

a=+3

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