16=6+3(r-9)

Solution for 16=6+3(r-9) equation:

16=6+3(r-9)

We move all terms to the left:

16-(6+3(r-9))=0


We calculate terms in parentheses: -(6+3(r-9)), so:

6+3(r-9)

determiningTheFunctionDomain
3(r-9)+6

We multiply parentheses

3r-27+6

We add all the numbers together, and all the variables

3r-21

Back to the equation:

-(3r-21)


We get rid of parentheses

-3r+21+16=0

We add all the numbers together, and all the variables

-3r+37=0

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

-3r=-37

r=-37/-3

r=12+1/3