l 3/4 . x - 3/5 l - 1/2 = 0
l 3/4 . x - 3/5 l = 0 + 1/2
Th1: Th2:
3/4 . x - 3/5 = 1/2 3/4 . x - 3/5 = -1/2
3/4 . x = 1/2 + 3/5 3/4 . x = -1/2 + -3/5
3/4 . x = 11/10 3/4 . x = 1/10
x = 11/10 : 3/4 x = 1/10 : 3/4
x = 22/15 x = 1/10
Vậy x= 22/15 và 1/10