12(b-12)=-6(b-9)

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Solution for 12(b-12)=-6(b-9) equation: 



12(b-12)=-6(b-9)

We move all terms to the left:

12(b-12)-(-6(b-9))=0

We multiply parentheses

12b-(-6(b-9))-144=0



We calculate terms in parentheses: -(-6(b-9)), so:

-6(b-9)

We multiply parentheses

-6b+54

Back to the equation:

-(-6b+54)



We get rid of parentheses

12b+6b-54-144=0

We add all the numbers together, and all the variables

18b-198=0

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

18b=198

b=198/18

b=11

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