Matematyka z plusem 5 wersja c ćwiczenia zadanie 3 str36

Odpowiedź:
B) 2/3 + 1/6 = 4/6 + 1/6 = 5/6
C) 1 5/6 + 4 1/12 = 11/6 + 49/12 = 22/12 + 49/12 = 71/12 = 5 11/12
D) 4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 0,5
E) 8/3 - 8/9 = 24/9 - 8/9 = 16/9 = 1 7/9
F) 2 1/2 - 1/4 = 5/2 - 1/4 = 10/4 - 1/4 = 9/4 = 2 1/4 = 2,25