Odpowiedź :
Odpowiedź:
7/20 + 1/2 = 7/20 + 10/20 = 17/20
1/6 + 1/9 = 3/18 + 2/18 = 5/18
2/12 + 4/9 = 6/36 + 16/36 = 22/36 = 11/18
3/5 + 3/20 = 12/20 + 3/20 = 15/20 = 3/4
1 i 7/15 + 2 i 4/45 = 1 i 21/45 + 2 i 4/45 = 3 i 25/45 = 3 i 5/9
Odpowiedź:
7/20 + 1/2 = 7/20 + 10/20 = 17/20
1/6 + 1/9 = 3/18 + 2/18 = 5/18
2/12 + 4/9 = 6/36 + 16/36 = 22/36 = 11/18
3/5 + 3/20 = 12/20 + 3/20 = 15/20 = 3/4
1 i 7/15 + 2 i 4/45 = 1 i 21/45 + 2 i 4/45 = 3 i 25/45 = 3 i 5/9