A(x)=20-2.50x

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Solution for A(x)=20-2.50x equation: 



(A)=20-2.50A

We move all terms to the left:

(A)-(20-2.50A)=0

We add all the numbers together, and all the variables

A-(-2.5A+20)=0

We get rid of parentheses

A+2.5A-20=0

We add all the numbers together, and all the variables

3.5A-20=0

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

3.5A=20

A=20/3.5

A=5+2.5/3.5

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