`|2x-4/3| : 4/15 - 75% = 37/4`
`⇒ |2x-4/3| : 4/15 - 3/4 = 37/4`
`⇒ 15|2x - 4/3| : 4 - 3/4 = 37/4`
`⇒ 15|2x-4/3| = 40`
`⇒ |2x - 4/3| = 8/3`
Trường hợp 1 :
`2x - 4/3 = 8/3`
`⇔ 2x = 8/3 - 4/3`
`⇔ 2x = 4`
`⇔ x = 2`
Trường hợp 2 :
`2x - 4/3 = -8/3`
`⇔ 2x = -8/3 + 4/3`
`⇔ 2x = -4/3`
`⇔ x = -2/3`
Vậy `x ∈ {-2/3 , 2}`