\(\left|3x-1\right|-2=3\\ \left|3x-1\right|=5\\TH1:3x-1=5\\ 3x=6\\ x=2\\ TH2:3x-1=-5\\ 3x=-4\\ x=\dfrac{-4}{3}\)
|3x-1|-2=3
|3x-1|=5
Th1: 3x-1=5 Th2: 3x-1=-5
3x=6 3x=-4
x=2 x=-4/3
Vậy ....
|3x - 1|= 3+2
|3x - 1|= 5
3x - 1= 5
3x = 5 + 1
3x = 6
x = 6 / 3
x = 2