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D( x )
x-2 = 0
x-2 = 0
x-2 = 0
x-2 = 0 // + 2
x = 2
x in (-oo:2) U (2:+oo)
x/(x-2) = 2/(x-2)-(2/3) // - 2/(x-2)-(2/3)
x/(x-2)-(2/(x-2))+2/3 = 0
x/(x-2)-2*(x-2)^-1+2/3 = 0
x/(x-2)-2/(x-2)+2/3 = 0
(3*x)/(3*(x-2))+(-2*3)/(3*(x-2))+(2*(x-2))/(3*(x-2)) = 0
2*(x-2)+3*x-2*3 = 0
3*x+2*x-6-4 = 0
5*x-10 = 0
(5*x-10)/(3*(x-2)) = 0
(5*x-10)/(3*(x-2)) = 0 // * 3*(x-2)
5*x-10 = 0
5*x-10 = 0 // + 10
5*x = 10 // : 5
x = 10/5
x = 2
x in { 2}
x belongs to the empty set
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