oblicz wedlug wzoru 4 - 1 2/3 = 3 - 2/3 = 2 1/3 nastepne trzeba zrobic 3 - 1 3/4 = , 5- 2 2/5, 4-2 4/7, 7-4 5/6, 6 -3 2/9

4 - 1 2/3 = 3 - 2/3 = 2 1/3 nastepne trzeba zrobic 3 - 1 3/4 =  2 - 3/4 = 1 1/4 5- 2 2/5 = 3 - 2/5 = 2 3/5 4-2 4/7 = 2 - 4/7 = 1 3/7 7-4 5/6 = 3 - 5/6 = 2 1/6 6 -3 2/9 = 3 - 2/9 = 2 7/9