Odpowiedź:
4 * 2/3 = 8/3 = 2 i 2/3
13 * 1/3 = 13/3 = 4 i 1/3
4/7 * 4 = 16/7 = 2 i 2/7
2/5 * 9 = 18/5 = 3 i 3/5
4 * 3/5 = 12/5 = 2 i 2/5
3 * 3/7 = 9/7 = 1 i 2/7
SUDETY