Odpowiedź:
1 - 2/5 = 5/5 - 2/5 = 3/5
2 - 3/5 = 1 i 5/5 - 3/5 = 1 i 2/5
3 - 4/5 = 2 i 5/5 - 4/5 = 2 i 1/5
