Пошаговое объяснение:
1) = 4 : 12/5 = 4 * 5/12 = 20/12 = 1 8/12 = 1 2/3
2) = 40/7 * 1/25 = 8/7 * 1/5 = 8/35
3) = 30/7 * 7/5 = 30/5 = 6
4) = 20/3 : 18/7 = 20/3 * 7/18 = 10/3 * 7/9 = 70/27 = 2 16/27
5) 5/4 : 5/3 = 5/4 * 3/5 = 15/20 = 3/4
Пошаговое объяснение:
Пошаговое объяснение:
1) = 4 : 12/5 = 4 * 5/12 = 20/12 = 1 8/12 = 1 2/3
2) = 40/7 * 1/25 = 8/7 * 1/5 = 8/35
3) = 30/7 * 7/5 = 30/5 = 6
4) = 20/3 : 18/7 = 20/3 * 7/18 = 10/3 * 7/9 = 70/27 = 2 16/27
5) 5/4 : 5/3 = 5/4 * 3/5 = 15/20 = 3/4