3(-6-6b)=-(9b-9)

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Solution for 3(-6-6b)=-(9b-9) equation: 



3(-6-6b)=-(9b-9)

We move all terms to the left:

3(-6-6b)-(-(9b-9))=0

We add all the numbers together, and all the variables

3(-6b-6)-(-(9b-9))=0

We multiply parentheses

-18b-(-(9b-9))-18=0



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

-(9b-9)

We get rid of parentheses

-9b+9

Back to the equation:

-(-9b+9)



We get rid of parentheses

-18b+9b-9-18=0

We add all the numbers together, and all the variables

-9b-27=0

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

-9b=27

b=27/-9

b=-3

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