A(x)=(3x-1)-9

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Solution for A(x)=(3x-1)-9 equation: 



(A)=(3A-1)-9

We move all terms to the left:

(A)-((3A-1)-9)=0



We calculate terms in parentheses: -((3A-1)-9), so:

(3A-1)-9

We get rid of parentheses

3A-1-9

We add all the numbers together, and all the variables

3A-10

Back to the equation:

-(3A-10)



We get rid of parentheses

A-3A+10=0

We add all the numbers together, and all the variables

-2A+10=0

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

-2A=-10

A=-10/-2

A=+5

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