Завдання 201 - 300 » 280

Виконай віднімання: 1) 7 – 52/17 = 617/17 – 52/17 = 115/17; 2) 5 – 19/13 = 413/138 – 19/13 = 34/13; 3) 74/7 – 3/14 = 7(8-3)/14 = 75/14; 4) 94/5 – 3/10 = 9(8-3)/10 = 95/10 = 91/2; 5) 75/6 – 53/4 = 2(10-9)/12 = 21/12; 6) 33/10 – 14/15 = 2(9-8)/30 = 21/30; 7) 511/18 – 55/12 = (22-15)/36 = 7/36; 8) 1723/24 – 517/36 = 12(69-34)/72 = 1235/72.