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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)
(x+4)/(3*x-2) = 4.5/9 // - 4.5/9
(x+4)/(3*x-2)-(4.5/9) = 0
(x+4)/(3*x-2)-0.5 = 0
(x+4)/(3*x-2)+(-0.5*(3*x-2))/(3*x-2) = 0
x-0.5*(3*x-2)+4 = 0
5-0.5*x = 0
(5-0.5*x)/(3*x-2) = 0
(5-0.5*x)/(3*x-2) = 0 // * 3*x-2
5-0.5*x = 0
5-0.5*x = 0 // - 5
-0.5*x = -5 // : -0.5
x = -5/(-0.5)
x = 10
x = 10
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