Odpowiedź:
11.
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
12.
a)
3 1/4 - 3/4 = 2 5/4 - 3/4 = 2 2/4 = 2 1/2
b)
5 5/8 - 7/8 = 4 13/8 - 7/8 = 4 6/8 = 4 3/4
c)
7 3/5 - 4/5 = 6 8/5 - 4/5 = 6 4/5
d)
5 1/4 - 2 3/4 = 4 5/4 - 2 3/4 = 2 2/4 = 2 1/2
e)
7 1/5 - 3 3/5 = 6 6/5 - 3 3/5 = 3 3/5
f)
9 1/8 - 2 7/8 = 8 9/8 - 2 7/8 = 6 2/8 = 6 1/4
Szczegółowe wyjaśnienie:
