Odpowiedź:
7 – 2 i 2/5 = (?) 5 2/5
b)
10 – 4/7 = 9 3/7
c)
6 i 5/8 - 7/8 = 5 13/8 - 7/8 = 5 6/8 = 5 3/4
d)
8 i ¼ - 3 i ¾ = 7 5/4 - 3 3/4 = 4 2/4 = 4 1/2
e)
9 – 6/10 = 8 4/10 = 8 2/5
f)
12 i 1/8 – 2 i 7/8 = 11 9/8 - 2 7/8 = 9 2/8 = 9 1/4
g)
5 i 1/3 – 2/3 = 4 4/3 - 2/3 = 4 2/3
h)
11 – 5 i 5/11 = 5 6/11
i)
9/6 – 5/6 = 4/6 = 2/3
Dodatkowe:
9 – (5 i 1/3 – 2 i 2/3) = 9 - (4 4/3 - 2 2/3) = 9 - 2 2/3 = 6 1/3
Szczegółowe wyjaśnienie: