Odpowiedź:
4-2/7 = 3 i 7/7 - 2/7 = 3 i 5/7
6-1 i 1/4 = 5 i 4/4 - 1 i 1/4 = 4 i 3/4
4 i 1/3 - 1 i 2/3 = 3 i 4/3 - 1 i 2/3 = 2 i 2/3
5 i 2/9 - 3 i 4/9 = 4 i 11/9 - 3 i 4/9 = 1 i 7/9
Szczegółowe wyjaśnienie:
4 - 2/7 = 3 5/7
6 - 1 1/4 = 4 3/4
4 1/3 - 1 2/3 = 3 4/3 - 1 2/3 = 2 2/3
5 2/9 - 3 4/9 = 4 11/9 - 3 4/9 = 1 7/9
