Zadanie 9
2 1/4 - 1 3/4= 1 5/4 - 1 3/4 = 2/4= 1/2
7 3/8 - 2 7/8= 6 11/8 - 2 7/8= 4 4/8 = 4 1/2
4 2/9 - 1 5/9= 3 11/9 - 1 5/9 =2 6/9 = 2 2/3