Oblicz. Wynik podaj w najprostszej postaci.
1/4+1/4 =
1/9+5/9 =
3/10+7/10 =
5/12+4/12 =
11/15+7/15 =
7/8-3/8 =
13/16+9/16 =
1-1/4 =
1-18/30 =
Oblicz:
2 1/8+4/8 =
1 5/8+3 7/8 =