Пошаговое объяснение:
3. 1/3х : 1,5 = 4. 2/7 : 3/14
3. 1/3х = 1,5 * 4. 2/7 : 3/14
3. 1/3х = 1. 5/10 * 4. 2/7 : 3/14
10/3х = 15/10 * 30/7 : 3/14
10/3х = 15/1 * 3/7 : 3/14
10/3х = 45/7 : 3/14
10/3х = 45/7 * 14/3
10/3х = 15/1 * 2/1
10/3х = 30
х = 30 : 10/3
х = 30 * 3/10
х = 90/10
х = 9
ответ: 9
