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