A(n)=-5+(n-1)(4)

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Solution for A(n)=-5+(n-1)(4) equation: 



(A)=-5+(A-1)(4)

We move all terms to the left:

(A)-(-5+(A-1)(4))=0



We calculate terms in parentheses: -(-5+(A-1)4), so:

-5+(A-1)4

determiningTheFunctionDomain
(A-1)4-5

We multiply parentheses

4A-4-5

We add all the numbers together, and all the variables

4A-9

Back to the equation:

-(4A-9)



We get rid of parentheses

A-4A+9=0

We add all the numbers together, and all the variables

-3A+9=0

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

-3A=-9

A=-9/-3

A=+3

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