54=-3(1-3b)-6(1+3b)

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Solution for 54=-3(1-3b)-6(1+3b) equation: 



54=-3(1-3b)-6(1+3b)

We move all terms to the left:

54-(-3(1-3b)-6(1+3b))=0

We add all the numbers together, and all the variables

-(-3(-3b+1)-6(3b+1))+54=0



We calculate terms in parentheses: -(-3(-3b+1)-6(3b+1)), so:

-3(-3b+1)-6(3b+1)

We multiply parentheses

9b-18b-3-6

We add all the numbers together, and all the variables

-9b-9

Back to the equation:

-(-9b-9)



We get rid of parentheses

9b+9+54=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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