сравните дроби 1/7 и 4/21, 3/5 и 8/15 ,3/5 и 11/20, 4/7 и 16/28 , 4/9 и 8/15 , 5/12 и 7/18, 37/115 и 38/175, 9/65 и 16/117

приводим дроби к НОЗ и сравниваем▪1/7 < 4/21, т.к. 3/21 < 4/21 ▪3/5 > 8/15 , т.к. 9/15 > 8/15▪3/5 > 11/20, т.к. 12/20 > 11/20▪4/7 = 16/28 , т.к. 4/7 = 4/7 (сокращаем 2 дробь на 4)▪4/9 < 8/15 , т.к. 20/45 < 24/45▪5/12 > 7/18, т.к. 15/36 > 14/36▪37/115 > 38/175, т.к. 1295/4025 > 874/4025▪9/65 > 16/117 т.к. 81/585 > 80/585