A=20+5n

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Solution for A=20+5n equation: 



=20+5A

We move all terms to the left:

-(20+5A)=0

We add all the numbers together, and all the variables

-(5A+20)=0

We get rid of parentheses

-5A-20=0

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

-5A=20

A=20/-5

A=-4

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