Пошаговое объяснение:
3/8 * 8/11 = 3/11
5/7 * 2/5 = 2/7
3/8 * 8/15 = 3/15 = 1/5
11/27 * 9/11 = 9/27 = 1/3
Пошаговое объяснение:
3/8 * 8/11 = 3/11
5/7 * 2/5 = 2/7
3/8 * 8/15 = 3/15 = 1/5
11/27 * 9/11 = 9/27 = 1/3