Пошаговое объяснение:
(2 4/9 + 1 1/6) * 1 4/5 - 3 1/9 : 2 1/3
2 4/9 + 1 1/6 = 22/9 + 7/6 = (44+21) /18 = 65/18
65/18 * 1 4/5 = 65/18 * 9/5 = 13/2
3 1/9 : 2 1/3 = 28/9 : 7/3 = 28/9 * 3/7 = 4/3
13/2 - 4/3 = (39-8) / 6 = 31/6 = 5 1/6
