-b+19=12b-20

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Solution for -b+19=12b-20 equation: 



-b+19=12b-20

We move all terms to the left:

-b+19-(12b-20)=0

We add all the numbers together, and all the variables

-1b-(12b-20)+19=0

We get rid of parentheses

-1b-12b+20+19=0

We add all the numbers together, and all the variables

-13b+39=0

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

-13b=-39

b=-39/-13

b=+3

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