-9(1-7b)=9(8b-8)

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Solution for -9(1-7b)=9(8b-8) equation: 



-9(1-7b)=9(8b-8)

We move all terms to the left:

-9(1-7b)-(9(8b-8))=0

We add all the numbers together, and all the variables

-9(-7b+1)-(9(8b-8))=0

We multiply parentheses

63b-(9(8b-8))-9=0



We calculate terms in parentheses: -(9(8b-8)), so:

9(8b-8)

We multiply parentheses

72b-72

Back to the equation:

-(72b-72)



We get rid of parentheses

63b-72b+72-9=0

We add all the numbers together, and all the variables

-9b+63=0

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

-9b=-63

b=-63/-9

b=+7

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