Пошаговое объяснение:
4 4/9 : (2/3х + 14) = 5/27
2/3х + 14 = 4 4/9 : 5/27
2/3х + 14 = 40/9 * 27/5
2/3х + 14 = 8/1 * 3/1
2/3х + 14 = 24
2/3х = 24 - 14
2/3х = 10
х = 10 : 2/3
х = 10 * 3/2
х = 30/2
х = 15
