53. Найдите частное.

Для деления обыкновенных дробей нужно первую дробь умножить на обратную второй дроби: 1) 6/35 : 5/7 = 6/35 * 7/5 = (6 * 7) / (35 * 5) = 42/175 = 6/25 2) 8/11 : 2/11 = 8/11 * 11/2 = (8 * 11) / (11 * 2) = 8/2 = 4 3) 2/5 : 3/6 = 2/5 * 6/3 = 2/5 * 2 = 4/5 4) 1/16 : 1/2 = 1/16 * 2/1 = 2/16 = 1/8 5) 15/28 : 20/49 = 15/28 * 49/20 = (3 * 7) / (4 * 4) = 21/16 = 1 5/16 6) 10/10 : 7/10 = 1 * 10/7 = 10/7 = 1 3/7 7) 11/4 : 1/4 = 11/4 * 4/1 = 11 8) 12/4 : 3/4 = 3 * 4/3 = 4 9) 16/21 : 20/49 = 16/21 * 49/20 = (4 * 7) / (3 * 5) = 28/15 = 1 13/15 10) 1/7 : 2/7 = 1/7 * 7/2 = 1/2 11) 1/5 : 6/5 = 1/5 * 5/6 = 1/6 12) 1/3 : 2/3 = 1/3 * 3/2 = 1/2 13) 4/7 : 1/7 = 4 14) 8/10 : 9/10 = 8/10 * 10/9 = 8/9 15) 9/1 : 1/3 = 27 16) 6/7 : 4/5 = 6/7 * 5/4 = 30/28 = 15/14 = 1 1/14 17) 5/7 : 5/5 = 5/7 * 1 = 5/7 18) 5/2 : 3/2 = 5/2 * 2/3 = 5/3 = 1 2/3