Odpowiedź:
1 - 1/2 = 2/2 - 1/2 = 1/2
2 - 1/2 = 1 i 2/2 - 1/2 = 1 i 1/2
4 - 1/2 = 3 i 2/2 - 1/2 = 3 i 1/2
1 - 3/5 = 5/5 - 3/5 = 2/5
4 - 3/5 = 3 i 5/5 - 3/5 = 3 i 2/5
6 - 3/5 = 5 i 5/5 - 3/5 = 5 i 2/5
1 - 1/9 = 9/9 - 1/9 = 8/9
7 - 1/9 = 6 i 9/9 - 1/9 = 6 i 8/9
10 - 1/9 = 9 i 9/9 - 1/9 = 9 i 8/9