15=6+3(n-1)

Solution for 15=6+3(n-1) equation:

15=6+3(n-1)

We move all terms to the left:

15-(6+3(n-1))=0


We calculate terms in parentheses: -(6+3(n-1)), so:

6+3(n-1)

determiningTheFunctionDomain
3(n-1)+6

We multiply parentheses

3n-3+6

We add all the numbers together, and all the variables

3n+3

Back to the equation:

-(3n+3)


We get rid of parentheses

-3n-3+15=0

We add all the numbers together, and all the variables

-3n+12=0

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

-3n=-12

n=-12/-3

n=+4