A(X)=x+2x-255

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Solution for A(X)=x+2x-255 equation: 



(A)=A+2A-255

We move all terms to the left:

(A)-(A+2A-255)=0

We add all the numbers together, and all the variables

A-(3A-255)=0

We get rid of parentheses

A-3A+255=0

We add all the numbers together, and all the variables

-2A+255=0

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

-2A=-255

A=-255/-2

A=127+1/2

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