Odpowiedź:
a)
3 3/8 - 5/8 = 2 11/8 - 5/8 = 2 6/8 = 2 3/4
b)
2 3/7 - 4/7 = 1 10/7 - 4/7 = 1 6/7
c)
8 2/5 - 4/5 = 7 7/5 - 4/5 = 7 3/5
d)
6 5/9 - 8/9 = 5 14/9 - 8/9 = 5 6/9 = 5 2/3
Szczegółowe wyjaśnienie:
3 i 3/8 - 5/8 = 2 i 11/8 - 5/8 = 2 i 6/8 = 2 i 3/4
2 i 3/7 - 4/7 = 1 i 10/7 - 4/7 = 1 i 6/7
8 i 2/5 - 4/5 = 7 i 7/5 - 4/5 = 7 i 3/5
6 i 5/9 - 8/9 = 5 i 14/9 - 8/9 = 5 i 6/9 = 5 i 2/3
