10. Oblicz:
(Na Dziś!!!!)
![10 Oblicz Na Dziś class=](https://pl-static.z-dn.net/files/db8/926b0326f7c7c81f8d5537de96c761ae.jpg)
Odpowiedź:
b) 3 i 6/7 + 1 i 3/7 = 4 i 9/7 = 5 i 2/7
c) 5 i 5/8 + 2 i 3/8 = 8
d) 5 i 4/9 + 7 i 7/9 = 12 i 11/9 = 13 i 2/9