Odpowiedź:
1 - 3/5 = 5/5 - 3/5 = 2/5
2 - 7/11 = 1 i 11/11 - 7/11 = 1 i 4/11
3 - 3/4 = 2 i 4/4 - 3/4 = 2 i 1/4
5 i 3/8 - 2 i 4/8 = 4 i 11/8 - 2 i 4/8 = 2 i 7/8
8 i 6/13 - 6 i 7/13 = 7 i 19/13 - 6 i 7/13 = 1 i 12/13
11 i 9/17 - 5 i 14/17 = 10 i 26/17 - 5 i 14/17 = 5 i 12/17
