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D( x )
3-x = 0
3-x = 0
3-x = 0
3-x = 0 // - 3
-x = -3 // * -1
x = 3
x in (-oo:3) U (3:+oo)
(6*x-1)/(3-x) < 2 // - 2
(6*x-1)/(3-x)-2 < 0
(6*x-1)/(3-x)+(-2*(3-x))/(3-x) < 0
6*x-2*(3-x)-1 < 0
8*x-7 < 0
(8*x-7)/(3-x) < 0
(8*x-7)/(3-x) < 0 // * (3-x)^2
(8*x-7)*(3-x) < 0
( 3-x )
3-x < 0
-x < -3 // * -1
x > 3
( 8*x-7 )
8*x-7 < 0 // + 7
8*x < 7 // : 8
x < 7/8
(-oo:7/8) (7/8:3) (3:+oo) 3-x + + - 8*x-7 - + +
x in (-oo:7/8) U (3:+oo)
(-oo:7/8) U (3:+oo)
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