Пошаговое объяснение:
1/20 * 2/5 = 2/100 = 1/50
16/19 * 38/8 = 2/1 * 2/1 = 4/1 = 4
25/34 * 2/30 = 5/17 * 1/6 = 5/102
Пошаговое объяснение:
1/20 * 2/5 = 2/100 = 1/50
16/19 * 38/8 = 2/1 * 2/1 = 4/1 = 4
25/34 * 2/30 = 5/17 * 1/6 = 5/102