(−∞,13)∪(1,∞)\left(-\infty, \frac{1}{3}\right) \cup(1, \infty)(−∞,31)∪(1,∞)
x>13x>\frac{1}{3}x>31
0<x<230<x<\frac{2}{3}0<x<32
(0,13)∪(13,23)\left(0, \frac{1}{3}\right) \cup\left(\frac{1}{3}, \frac{2}{3}\right)(0,31)∪(31,32)