Вычислите произведения
1/2 * 2/3
14/15 * 2/42
6/7 * 5/6
13/15 * 45/26
9/10 * 10/11
15/28 * 7/30
13/15 * 15/17
35/51 * 17/15

1/2 *2/3 = 2/6 = 1/314/15 * 2/42 = 28/630 = 2/456/7 * 5/6 = 5/713/15 * 45/26 = 3/29/10 * 10/11 = 9/1115/28 * 7/30 = 1/835/51 * 17/15 = 119/153