Odpowiedź :
a.
14/19-3/19=11/19
8/13-3/13=5//13
b.
4 3/10-2/10=4 1/10
5 2/7-1/7=5 1/7
c.
6 9/17-1 3/17=5 6/17
4 8/9-3 4/9=1 4/9
a) 14/19 - 3/19 = 11/19
8/13 - 3/13 = 5/13
b) 4 3/10 - 2/10 = 4 1/10
5 2/7 - 1/7 =5 1/7
c) 6 9/17 - 1 3/17 = 5 6/17
4 8/9 - 3 4/9 = 1 4/9