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D( x )
3*x-2 = 0
3*x-2 = 0
3*x-2 = 0
3*x-2 = 0 // + 2
3*x = 2 // : 3
x = 2/3
x in (-oo:2/3) U (2/3:+oo)
33/(3*x-2) = 5.5 // - 5.5
33/(3*x-2)-5.5 = 0
33/(3*x-2)+(-5.5*(3*x-2))/(3*x-2) = 0
33-5.5*(3*x-2) = 0
44-16.5*x = 0
(44-16.5*x)/(3*x-2) = 0
(44-16.5*x)/(3*x-2) = 0 // * 3*x-2
44-16.5*x = 0
44-16.5*x = 0 // - 44
-16.5*x = -44 // : -16.5
x = -44/(-16.5)
x = 2.66666667
x = 2.66666667
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