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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

6b-(-7(-4b-4))+21=0



We calculate terms in parentheses: -(-7(-4b-4)), so:

-7(-4b-4)

We multiply parentheses

28b+28

Back to the equation:

-(28b+28)



We get rid of parentheses

6b-28b-28+21=0

We add all the numbers together, and all the variables

-22b-7=0

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

-22b=7

b=7/-22

b=-7/22

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