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D( X )
4*X = 0
4*X = 0
4*X = 0
4*X = 0 // : 4
X = 0
X in (-oo:0) U (0:+oo)
(24/11)/(4*X) = 0
6/11*X^-1 = 0 // : 6/11
X^-1 = 0
X naleu017Cy do O
X belongs to the empty set
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