Odpowiedź:
1 i 2/17 + 3 i 5/17 = 4 i 7/17
5 i 4/7 - 2 i 5/7 = 4 i 11/7 - 2 i 5/7 = 2 i 6/7
4 i 9/8 - 2 i 3/8 = 2 i 6/8 = 2 i 3/4
7 - 3/7 = 6 i 7/7 - 3/7 = 6 i 4/7
