Odpowiedź:
odejmowanie
4/5 - 2/5 = 2/5
1 1/7 - 4/7 = 8/7 - 4/7 = 4/7
3 1/3 - 2 1/6 = 3 2/6 - 2 1/6 = 1 1/6
6 1/3 - 1/2 = 6 2/6 - 3/6 = 5 8/6 - 3/6 = 5 5/6
8 1/8 - 2/3 = 8 3/24 - 16/24 = 7 27/24 - 16/24 = 7 11/24
mnozenie
1/2 * 2/3 = 1/3
3 * 3/8 = 9/8 = 1 1/8
4 4/5 * 2 3/4 = 24/5 * 11/4 = 66/20 = 3 6/20 = 3 3/10
3 1/2 * 2 4/7 = 7/2 * 18/7 = 9
5/16 * 24 = 5/2 * 3 = 15/2 = 7 1/2
8/10 * 5/8 = 1/2
dzielenie
4/7 : 2/12 = 4/7 * 12/2 = 4/7 * 6 = 2/21
3/5 : 10/15 = 3/5 : 2/3 = 3/5 * 3/2 = 9/10
1 2/3 : 6/10 = 5/3 : 3/5 = 5/3 * 5/3 = 25/9 = 2 7/9
Szczegółowe wyjaśnienie:
