Помогите решить по действиям

Question

Помогите решить по действиям

---

Answer 1

3) (1/3 - 5/16) : (1/6 - 1/8) = (16-15)/48 : (4-3)/24 = 1/48 : 1/24 = 1/48 * 24/1 = 1/2
4) (7/5 - 2/3) : (4/9 - 5/12) = (21-10)/15 : (16-15)/36 = 11/15 : 1/36 = 11/15 * 36/1 = 131/5 = 26 1/5