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

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



=-2+(A-1)-7

We move all terms to the left:

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



We calculate terms in parentheses: -(-2+(A-1)-7), so:

-2+(A-1)-7

determiningTheFunctionDomain
(A-1)-2-7

We add all the numbers together, and all the variables

(A-1)-9

We get rid of parentheses

A-1-9

We add all the numbers together, and all the variables

A-10

Back to the equation:

-(A-10)



We get rid of parentheses

-A+10=0

We add all the numbers together, and all the variables

-1A+10=0

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

-A=-10

A=-10/-1

A=+10

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