Помогите с номером 828

Question

Помогите с номером 828

---

Answer 1

А) 1/3 + 1/3 + 1/3 = 3/3 = 1
б) 1/5 + 2/5 + 3/5 = 6/5 = 1 1/5
в) 3/7 + 2/7 + 1/7 = 6/7
г) 7/30 + 7/30 + 1/30 = 15/30 = 5/10 = 1/2
д) 3/10 + 2/10 + 1/10 = 6/10 = 3/5
е) 7/26 + 5/26 + 1/26 = 13/26