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(x/3)^2-3(x/3)-4=0
We add all the numbers together, and all the variables
(+x/3)^2-3(+x/3)-4=0
We multiply parentheses
(+x/3)^2-3x-4=0
We multiply all the terms by the denominator
(+x-3x*3)^2-4*3)^2=0
We add all the numbers together, and all the variables
(+x-3x*3)^2=0
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