Помогите!!!!!!!!!!!!!!!!!

Question

Помогите!!!!!!!!!!!!!!!!!

---

Answer 1

5.70
б) 3/4 + 1*1/4 = 3/4 + 5/4 = 8/4 = 2
в) 4*1/3 + 1*2/3 = 13/3 + 5/3 = 18/3 = 6
д) 5/7 + 5*4/7 = 5/7 + 39/7 = 44/7 = 6*2/7