Tìm x: a) 1 5/27 + (3x - 7/9)^3 = 24/27 b) 2 |x| - 1/2 = 3/4 c) |2x - 1/3| + 5/6 =1

a)

1527+3x−793=24273x−793=2427−15273x−793=−8273x−79=−233x=19x=127

b)

2x−12=342x=54x=58x=±58

c) 

2x−13+56=12x−13=162x−13=±16

TH1:

2x−13=162x=12x=14

TH2:

2x−13=−162x=16x=112

Vậy x=14 hoặc x=112