-408=8(-2-7b)

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Solution for -408=8(-2-7b) equation: 



-408=8(-2-7b)

We move all terms to the left:

-408-(8(-2-7b))=0

We add all the numbers together, and all the variables

-(8(-7b-2))-408=0



We calculate terms in parentheses: -(8(-7b-2)), so:

8(-7b-2)

We multiply parentheses

-56b-16

Back to the equation:

-(-56b-16)



We get rid of parentheses

56b+16-408=0

We add all the numbers together, and all the variables

56b-392=0

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

56b=392

b=392/56

b=7

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