Odpowiedź :
Odpowiedź:
2/7 : 5/9 = 2/7 * 9/5 = 18/35
1/9 : 4/5 = 1/9 * 5/4 = 5/36
1/9 : 5/6 = 1/9 * 6/5 = 6/45 = 2/15
2/7 : 4/9 = 2/7 * 9/4 = 18/28 = 9/14
1 i 2/3 : 2 i 1/6 = 5/3 : 13/6 = 5/3 * 6/13 = 10/13
6 i 2/3 : 2 i 1/2 = 20/3 : 5/2 = 20/3 * 2/5 = 8/3 = 2 i 2/3