An=-4+3(n-1)

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Solution for An=-4+3(n-1) equation: 



A=-4+3(A-1)

We move all terms to the left:

A-(-4+3(A-1))=0



We calculate terms in parentheses: -(-4+3(A-1)), so:

-4+3(A-1)

determiningTheFunctionDomain
3(A-1)-4

We multiply parentheses

3A-3-4

We add all the numbers together, and all the variables

3A-7

Back to the equation:

-(3A-7)



We get rid of parentheses

A-3A+7=0

We add all the numbers together, and all the variables

-2A+7=0

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

-2A=-7

A=-7/-2

A=3+1/2

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