7 4/7-5 7/9 = 2 3/10-1 11/15 = 5 3/8-3 5/6 =Помогите

7 целых 4/7 — 5 целых 7/9 = 1 целая 50/63 2 целых 3/10 — 1 целая 11/15 = 17/30 5 целых 3/8 — 3 целых 5/6 = 1 целая 13/24