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