-3=-3(b+4)

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



-3=-3(b+4)

We move all terms to the left:

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



We calculate terms in parentheses: -(-3(b+4)), so:

-3(b+4)

We multiply parentheses

-3b-12

Back to the equation:

-(-3b-12)



We get rid of parentheses

3b+12-3=0

We add all the numbers together, and all the variables

3b+9=0

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

3b=-9

b=-9/3

b=-3

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