A(2)=12+(n-1)(7)

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Solution for A(2)=12+(n-1)(7) equation: 



(2)=12+(A-1)(7)

We move all terms to the left:

(2)-(12+(A-1)(7))=0



We calculate terms in parentheses: -(12+(A-1)7), so:

12+(A-1)7

determiningTheFunctionDomain
(A-1)7+12

We multiply parentheses

7A-7+12

We add all the numbers together, and all the variables

7A+5

Back to the equation:

-(7A+5)



We get rid of parentheses

-7A-5+2=0

We add all the numbers together, and all the variables

-7A-3=0

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

-7A=3

A=3/-7

A=-3/7

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