a+20=2a+2

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



a+20=2a+2

We move all terms to the left:

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

We get rid of parentheses

a-2a-2+20=0

We add all the numbers together, and all the variables

-1a+18=0

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

-a=-18

a=-18/-1

a=+18

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