1/7 и 4/21 = 21/147 и 28/147 1/7 < 4/213/5 и 8/15 = 9/15 и 8/15 3/5>8/153/5 и 11/20 = 12/20 и 11/20 3/5>11/204/7 и 16/28 = 16/28 и 16/28 4/7=16/284/9 и 8/15 = 20/45 и 24/45 4/9<8/155/12 и 7/18 = 45/108 и 42/108 5/12>7/1837/115 и 38/175 = 1295/4025 и 874/4025 37/115>38/1759/65 и 16/117 = 81/585 и 80/585 9/65>16/117 Подробнее - на -
Подробнее - на -