Odpowiedź:
Szczegółowe wyjaśnienie:
24)
a) 5/6
b) 4
c) 5 i 5/7
d) 1/8
e) 5 i 1/4
f) 1 i 4/7
25)
a) 1/6 + 2/5 = 5/30 + 12/30 = 17/30
b) 8/9 - 5/6 = 48/54 - 45/54 = 3/54 = 1/18
c) 1 1/5 + 8 1/7 = 1 7/35 + 8 5/35 = 9 12/35
d) 4 7/10 - 2 1/3 = 4 21/30 - 2 10/30 = 2 11/30
e) 4 1/5 - 7/10 = 4 2/10 - 7/10 = 3 12/10 - 7/10 = 3 5/10 = 3 1/2
f) 6 1/8 - 2 3/4 = 6 1/8 - 2 6/8 = 5 9/8 - 2 6/8 = 3 3/8
g) 10 2/3 - 6 7/9 = 10 6/9 - 6 7/9 = 9 15/9 - 6 7/9 = 3 8/9
h) 9 3/8 - 2 5/6 = 9 9/24 - 2 20/24 = 8 33/24 - 2 20/24 = 6 13/24
