-189=3(-8b-7)

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Solution for -189=3(-8b-7) equation: 



-189=3(-8b-7)

We move all terms to the left:

-189-(3(-8b-7))=0



We calculate terms in parentheses: -(3(-8b-7)), so:

3(-8b-7)

We multiply parentheses

-24b-21

Back to the equation:

-(-24b-21)



We get rid of parentheses

24b+21-189=0

We add all the numbers together, and all the variables

24b-168=0

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

24b=168

b=168/24

b=7

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