3(-2b+6)=-(-12b-72)

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Solution for 3(-2b+6)=-(-12b-72) equation: 



3(-2b+6)=-(-12b-72)

We move all terms to the left:

3(-2b+6)-(-(-12b-72))=0

We multiply parentheses

-6b-(-(-12b-72))+18=0



We calculate terms in parentheses: -(-(-12b-72)), so:

-(-12b-72)

We get rid of parentheses

12b+72

Back to the equation:

-(12b+72)



We get rid of parentheses

-6b-12b-72+18=0

We add all the numbers together, and all the variables

-18b-54=0

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

-18b=54

b=54/-18

b=-3

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