2=b+20

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Solution for 2=b+20 equation: 



2=b+20

We move all terms to the left:

2-(b+20)=0

We get rid of parentheses

-b-20+2=0

We add all the numbers together, and all the variables

-1b-18=0

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

-b=18

b=18/-1

b=-18

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