Odpowiedź:
c) 1 5/6+ 4 1/12= 1 10/12 + 4 1/2 = 5 11/12
d) 4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2
e) 8/3 - 8/9 = 24/9 - 8/9 = 16/9 = 1 7/9
2 1/2 - 1/4 = 2 2/4 - 1/4 = 2 1/4