Odpowiedź:
A. 1/3 • 5 = 5/3 = 1 i 2/3
B. 1 i 2/5 - 4/5 = 7/5 - 4/5 = 3/5
C. 2 - 2/5 = 1 i 3/5
D. 4/5 + 1/5 = 5/5 = 1
Odp. B