(7b-7)-2(3b+3)=-4

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Solution for (7b-7)-2(3b+3)=-4 equation: 



(7b-7)-2(3b+3)=-4

We move all terms to the left:

(7b-7)-2(3b+3)-(-4)=0

We add all the numbers together, and all the variables

(7b-7)-2(3b+3)+4=0

We multiply parentheses

(7b-7)-6b-6+4=0

We get rid of parentheses

7b-6b-7-6+4=0

We add all the numbers together, and all the variables

b-9=0

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

b=9

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