A=-12+4(n-2)

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Solution for A=-12+4(n-2) equation: 



=-12+4(A-2)

We move all terms to the left:

-(-12+4(A-2))=0



We calculate terms in parentheses: -(-12+4(A-2)), so:

-12+4(A-2)

determiningTheFunctionDomain
4(A-2)-12

We multiply parentheses

4A-8-12

We add all the numbers together, and all the variables

4A-20

Back to the equation:

-(4A-20)



We get rid of parentheses

-4A+20=0

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

-4A=-20

A=-20/-4

A=+5

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