Oblicz. Doprowadź wynik do najprostszej postaci.

Odpowiedź:
5 i 3/7 + 2 i 6/7 = 7 i 9/7 = 8 i 2/7
3 i 5/8 - 1 i 1/8 = 2 i 4/8 = 2 i 1/2
6 i 2/5 + 5 i 3/5 = 11 i 5/5 = 12
7 i 5/6 - 3 i 1/6 = 4 i 4/6 = 4 i 2/3
4 i 2/5 + 3 i 4/5 = 7 i 6/5 = 8 i 1/5
7 i 3/4 - 2 i 1/4 = 5 i 2/4 = 5 i 1/2
3 i 5/6 + 2 i 5/6 = 5 i 10/6 = 6 i 4/6 = 6 i 2/3
11 i 4/9 - 5 i 1/9 = 6 i 3/9 = 6 i 1/3