Ответ: 5 3/10 : 2 4/10 — 1 1/2 = 53/10 : 24/10 — 3/2 = 53/10 х 10/24 — 3/2 = 53/24 — 3/2 = 53/24 — 36/24 = (53-36)/24 = 17/24 (~ 0.71)