A(n)=-9+(n-1)(.5)

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Solution for A(n)=-9+(n-1)(.5) equation: 



(A)=-9+(A-1)(.5)

We move all terms to the left:

(A)-(-9+(A-1)(.5))=0

We add all the numbers together, and all the variables

A-(-9+(A-1)(0.5))=0

We multiply parentheses ..

A-(-9+(+0.5A-0.5))=0



We calculate terms in parentheses: -(-9+(+0.5A-0.5)), so:

-9+(+0.5A-0.5)

determiningTheFunctionDomain
(+0.5A-0.5)-9

We add all the numbers together, and all the variables

(0.5A-0.5)-9

We get rid of parentheses

0.5A-0.5-9

We add all the numbers together, and all the variables

0.5A-9.5

Back to the equation:

-(0.5A-9.5)



We get rid of parentheses

A-0.5A+9.5=0

We add all the numbers together, and all the variables

0.5A+9.5=0

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

0.5A=-9.5

A=-9.5/0.5

A=-19

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