-21=4+3(b+8)

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Solution for -21=4+3(b+8) equation: 



-21=4+3(b+8)

We move all terms to the left:

-21-(4+3(b+8))=0



We calculate terms in parentheses: -(4+3(b+8)), so:

4+3(b+8)

determiningTheFunctionDomain
3(b+8)+4

We multiply parentheses

3b+24+4

We add all the numbers together, and all the variables

3b+28

Back to the equation:

-(3b+28)



We get rid of parentheses

-3b-28-21=0

We add all the numbers together, and all the variables

-3b-49=0

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

-3b=49

b=49/-3

b=-16+1/3

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