Odpowiedź:
3 i 1/6 - 1/4 = 3 i 2/12 - 3/12 = 2 i 14/12 - 3/12 = 2 i 11/12
2 i 4/5 - 4/7 = 2 i 28/35 - 20/35 = 2 i 8/35
3 i 5/11 - 1/2 = 3 i 10/22 - 11/22 = 2 i 32/22 - 11/22 = 2 i 21/22
4 i 2/5 - 1 i 7/15 = 4 i 6/15 - 1 i 7/15 = 3 i 21/15 - 1 i 7/15 = 2 i 14/15
3 i 5/8 - 2 i 5/6 = 3 i 15/24 - 2 i 20/24 = 2 i 39/24 - 2 i 20/24 = 19/24
3 i 5/6 - 2 i 4/9 = 3 i 15/18 - 2 i 8/18 = 1 i 7/18