Odpowiedź:
pierwsze masz źle więc:
1- 1/5= 4/5
2- 1/5= 1 4/5
6- 1/5= 5 4/5
1- 4/7= 3/7
2-4/7=1 3/7
7-4/7= 6 3/7
3-5/11= 2 6/11
5-5/11= 4 6/11
8- 5/11= 7 6/11
5- 2 4/9= 2 5/9
12- 2 4/9= 9 5/9
20- 2 4/9= 17 5/9
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Odpowiedź:
pierwsze masz źle więc:
1- 1/5= 4/5
2- 1/5= 1 4/5
6- 1/5= 5 4/5
1- 4/7= 3/7
2-4/7=1 3/7
7-4/7= 6 3/7
3-5/11= 2 6/11
5-5/11= 4 6/11
8- 5/11= 7 6/11
5- 2 4/9= 2 5/9
12- 2 4/9= 9 5/9
20- 2 4/9= 17 5/9