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

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



(A)=-12(A+1)

We move all terms to the left:

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



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

-12(A+1)

We multiply parentheses

-12A-12

Back to the equation:

-(-12A-12)



We get rid of parentheses

A+12A+12=0

We add all the numbers together, and all the variables

13A+12=0

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

13A=-12

A=-12/13

A=-12/13

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