-100=5(-4-4b)

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Solution for -100=5(-4-4b) equation: 



-100=5(-4-4b)

We move all terms to the left:

-100-(5(-4-4b))=0

We add all the numbers together, and all the variables

-(5(-4b-4))-100=0



We calculate terms in parentheses: -(5(-4b-4)), so:

5(-4b-4)

We multiply parentheses

-20b-20

Back to the equation:

-(-20b-20)



We get rid of parentheses

20b+20-100=0

We add all the numbers together, and all the variables

20b-80=0

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

20b=80

b=80/20

b=4

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