42=-3(3b-2)

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Solution for 42=-3(3b-2) equation: 



42=-3(3b-2)

We move all terms to the left:

42-(-3(3b-2))=0



We calculate terms in parentheses: -(-3(3b-2)), so:

-3(3b-2)

We multiply parentheses

-9b+6

Back to the equation:

-(-9b+6)



We get rid of parentheses

9b-6+42=0

We add all the numbers together, and all the variables

9b+36=0

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

9b=-36

b=-36/9

b=-4

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