Пошаговое объяснение:
1) 2 1/3 + 2 5/12 = 2 4/12 + 2 5/12 = 28/12 + 29/12 = 57/12
2) 2 2/3 * 57/12 = 8/3 * 57/12 = 456/36 = 76/6
3) 76/6 - 4 4/5 = 38/3 - 24/5 = 190/15 - 72/15 = 118/15 = 7 13/15
