Odpowiedź:
1/9 : 4/6 = 1/9 * 6/4 = 3/12
15/21 : 3/7 = 15/21 * 7/3 = 5/3 = 1 2/3
12/6 * 9/16 = 2 * 9/16 = 9/8 = 1 1/8
4 1/4 * 3/2 = 17/4 * 3/2 = 51/8 = 6 3/8
2 1/3 * 7 1/5 = 7/3 * 36/5 = 84/5 = 16 4/5
2 1/2 * 8/7 = 5/2 * 8/7 = 20/7 = 2 6/7
2/5 : 6 = 2/5 * 1/6 = 1/15
3 1/4 - 2 1/2 : 3 = 3 1/4 - 5/2 * 1/3 = 3 1/4 - 5/6 = 3 3/12 - 10/12 = 2 15/12 - 10/12 =
= 2 5/12
Szczegółowe wyjaśnienie: