Odpowiedź:
zad4
a) 11/12 - 5/12= 6/12 = 1/2
b) 1 6/7 - 5/7= 1 1/7
c) 3 7/9 - 1 5/9= 2 2/9
d) 2 4/5 - 1 4/5= 1
zad5
a)
1 - 3/14= 14/14- 3/14 = 11/14
1 - 7/9= 9/9 - 7/9 = 2/9
b)
3 - 1/4= 2 4/4 - 1/4 = 2 3/4
5 - 5/7= 4 7/7 - 5/7 = 4 2/7
c)
3 4/9 - 7/9= 2 9/9 - 7/9= 2 2/9
2 7/12 - 1 11/12= 1 19/12 - 1 11/12 = 8/12 = 2/3
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