Пошаговое объяснение:
(9 - 2 2/15 * 3 1/8) * 9/14 = 1 1/2
2 2/15 * 3 1/8 = 32/15 * 25/8 = 20/3
9 - 20/3 = (27-20) / 3 = 7/3
7/3 * 9/14 = 3/2 = 1 1/2
