-164=-7b+4(5-4b)

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Solution for -164=-7b+4(5-4b) equation: 



-164=-7b+4(5-4b)

We move all terms to the left:

-164-(-7b+4(5-4b))=0

We add all the numbers together, and all the variables

-(-7b+4(-4b+5))-164=0



We calculate terms in parentheses: -(-7b+4(-4b+5)), so:

-7b+4(-4b+5)

We multiply parentheses

-7b-16b+20

We add all the numbers together, and all the variables

-23b+20

Back to the equation:

-(-23b+20)



We get rid of parentheses

23b-20-164=0

We add all the numbers together, and all the variables

23b-184=0

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

23b=184

b=184/23

b=8

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