-105=7(3b+6)

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Solution for -105=7(3b+6) equation: 



-105=7(3b+6)

We move all terms to the left:

-105-(7(3b+6))=0



We calculate terms in parentheses: -(7(3b+6)), so:

7(3b+6)

We multiply parentheses

21b+42

Back to the equation:

-(21b+42)



We get rid of parentheses

-21b-42-105=0

We add all the numbers together, and all the variables

-21b-147=0

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

-21b=147

b=147/-21

b=-7

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