|2x - 1| = 5
⇒$\left \{ {{2x-1=5} \atop {2x-1=-5}} \right.$
⇒$\left \{ {{2x=5+1} \atop {2x=-5+1}} \right.$
⇒$\left \{ {{2x=6} \atop {2x=-4}} \right.$
⇒$\left \{ {{x=6:2} \atop {x=-4:2}} \right.$
⇒$\left \{ {{x=3} \atop {x=-2}} \right.$
Vậy x = 3 hoặc x = -2