-b+20=19b-20

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Solution for -b+20=19b-20 equation: 



-b+20=19b-20

We move all terms to the left:

-b+20-(19b-20)=0

We add all the numbers together, and all the variables

-1b-(19b-20)+20=0

We get rid of parentheses

-1b-19b+20+20=0

We add all the numbers together, and all the variables

-20b+40=0

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

-20b=-40

b=-40/-20

b=+2

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