AN=(2n-7)

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Solution for AN=(2n-7) equation: 



=(2A-7)

We move all terms to the left:

-((2A-7))=0



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

(2A-7)

We get rid of parentheses

2A-7

Back to the equation:

-(2A-7)



We get rid of parentheses

-2A+7=0

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

-2A=-7

A=-7/-2

A=3+1/2

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