75=-3(-9+b)

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Solution for 75=-3(-9+b) equation: 



75=-3(-9+b)

We move all terms to the left:

75-(-3(-9+b))=0

We add all the numbers together, and all the variables

-(-3(b-9))+75=0



We calculate terms in parentheses: -(-3(b-9)), so:

-3(b-9)

We multiply parentheses

-3b+27

Back to the equation:

-(-3b+27)



We get rid of parentheses

3b-27+75=0

We add all the numbers together, and all the variables

3b+48=0

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

3b=-48

b=-48/3

b=-16

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