20=2b+19

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Solution for 20=2b+19 equation: 



20=2b+19

We move all terms to the left:

20-(2b+19)=0

We get rid of parentheses

-2b-19+20=0

We add all the numbers together, and all the variables

-2b+1=0

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

-2b=-1

b=-1/-2

b=1/2

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