Odpowiedź:
2 i 7/8 * 1 i 2/3 - 1 i 4/5 = 23/8 * 5/3 - 1 i 4/5 = 115/24 - 1 i 4/5 = 4 i 19/24 - 1 i 4/5 = 4 i 95/120 - 1 i 96/120 = 3 i 215/120 - 1 i 96/120 = 2 i 119/120