Odpowiedź:
3 i 2/7 + 1 i 1/3 + 4 i 3/7 + 2 i 1/6 + 1/2 = 3 i 12/42 + 1 i 14/42 + 4 i 18/42 + 2 i 7/42 + 21/42 = 10 i 72/42 = 11 i 30/42 = 11 i 5/7
2 i 3/5 + 2/9 + 3 i 1/2 + 1/3 + 7/10 = 2 i 54/90 + 20/90 + 3 i 45/90 + 63/90 = 5 i 182/90 = 7 i 2/90 = 7 i 1/45
