-19=-4(-5b-2)-3(1+8b)

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Solution for -19=-4(-5b-2)-3(1+8b) equation: 



-19=-4(-5b-2)-3(1+8b)

We move all terms to the left:

-19-(-4(-5b-2)-3(1+8b))=0

We add all the numbers together, and all the variables

-(-4(-5b-2)-3(8b+1))-19=0



We calculate terms in parentheses: -(-4(-5b-2)-3(8b+1)), so:

-4(-5b-2)-3(8b+1)

We multiply parentheses

20b-24b+8-3

We add all the numbers together, and all the variables

-4b+5

Back to the equation:

-(-4b+5)



We get rid of parentheses

4b-5-19=0

We add all the numbers together, and all the variables

4b-24=0

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

4b=24

b=24/4

b=6

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