-20-19b=-7(4b-19)

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Solution for -20-19b=-7(4b-19) equation: 



-20-19b=-7(4b-19)

We move all terms to the left:

-20-19b-(-7(4b-19))=0



We calculate terms in parentheses: -(-7(4b-19)), so:

-7(4b-19)

We multiply parentheses

-28b+133

Back to the equation:

-(-28b+133)



We get rid of parentheses

-19b+28b-133-20=0

We add all the numbers together, and all the variables

9b-153=0

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

9b=153

b=153/9

b=17

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