Odpowiedź:
4 3/4 - 1/2 = 4 3/4 - 2/4 = 4 1/4
1/2 + 1/3 = 3/6 + 2/6 = 5/6
8 7/6 + 3 5/8 = 8 28/24 + 3 15/24 = 11 43/24 = 12 19/24
3 3/5 * 7 2/9 = 18/5 * 65/9 = 2 * 13 = 26
9/7 : 3/74 = 9/7 * 74/3 = 3/7 * 74 = 222/7= 31 5/7
10 2/3 : 8/9 = 32/3 : 8/9 = 32/3 * 9/8 = 4 * 3 = 12
