Odpowiedź:
3/10 = 1/5 + 1/10 = 2/10 + 1/10 = 3/10
3/4 = 1/4 + 1/2 = 1/4 + 2/4 = 3/4
47/60 = 1/5 + 1/3 + 1/4 = 12/60 + 20/60 + 15/60 = 47/60
19/20 = 1/2 + 1/4 + 1/5 = 10/20 + 5/20 + 4/20 = 19/20
