A(n)=-6+3(n-1)

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

(A)=-6+3(A-1)

We move all terms to the left:

(A)-(-6+3(A-1))=0


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

-6+3(A-1)

determiningTheFunctionDomain
3(A-1)-6

We multiply parentheses

3A-3-6

We add all the numbers together, and all the variables

3A-9

Back to the equation:

-(3A-9)


We get rid of parentheses

A-3A+9=0

We add all the numbers together, and all the variables

-2A+9=0

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

-2A=-9

A=-9/-2

A=4+1/2