Odpowiedź:
2 1/4 + 3 2/7 + 5 3/7 = 2 7/28 + 3 8/28 + 5 12/18 = 10 27/28
5 1/4 - 4 3/4 = 4 5/4 - 4 3/4 = 2/4 = 1/2
8 1/3 - 6 1/3 = 2
5 10/7 - 1 3/7 = 4 7/7 = 5
3/7 + 4/5 = 15/35 + 28/35 = 43/35 = 1 8/35
10/12 + 3/24 = 20/24 +3/24 = 23/24
1 1/2 + 2 1/3 = 1 3/6 + 2 2/6 = 3 5/6
3 1/2 - 1 3/4 = 3 2/4 - 1 3/4 = 2 6/4 - 1 3/4 = 1 3/4
6 2/3 - 2 3/7 = 6 14/21 - 2 9/21 = 4 5/21
10 1/5 - 3 4/10 = 10 2/10 - 3 4/10 = 9 12/10 - 3 4/10 = 6 8/10 = 6 4/5
2/7 * 25/10 = 25/35 = 5/7
10/20 * 25/15 = 1/2 * 5/3 = 5/6
8 1/2 * 1 1/2 = 17/2 * 3/2 = 51/4 = 12 3/4
9 3/4 * 2 1/8 = 39/4 * 17/8 = 663/32 = 20 23/32
5/7 : 1/14 = 5/7 * 14/1 = 5/7 * 14 = 70/7 = 10
1 1/2 : 3/2 = 3/2 * 2/3 = 6/6 = 1
3 1/5 : 2 1/6 = 16/5 : 13/6 = 16/5 * 6/13 = 96/65 = 1 31/65
5 1/3 : 2/3 = 16/3 * 3/2 = 16/2 = 8
10 1/2 : 5 1/4 = 21/2 : 21/4 = 21/2 * 4/21 = 2
6 1/5 : 6 1/10 = 31/5 : 61/10 = 31/5 * 10/61 = 62/61 = 1 1/61
Szczegółowe wyjaśnienie: