Odpowiedź:
3 i 3/4 + 2 i 1/7 = 3 i 21/28 + 2 i 4/28 = 5 i 25/28
6 i 3/4 - 4 i 1/3 = 6 i 9/12 - 4 i 4/12 = 2 i 5/12
5 i 4/15 - 1 i 2/5 = 5 i 4/15 - 1 i 6/15 = 4 i 19/15 - 1 i 6/15 = 3 i 13/15
4 i 3/8 + 5 i 5/6 = 4 i 9/24 + 5 i 20/24 = 9 i 29/24 = 10 i 5/24
8 i 3/5 - 3 i 1/4 = 8 i 12/20 - 3 i 5/20 = 5 i 7/20
7 i 10/21 + 2 i 9/14 = 7 i 20/42 + 2 i 27/42 = 9 i 47/42 = 10 i 5/42
4 i 1/11 + 3 i 1/33 = 4 i 3/33 + 3 i 1/33 = 7 i 4/33
3 i 5/9 - 1 i 1/2 = 3 i 10/18 - 1 i 9/18 = 2 i 1/18
5 i 6/7 - 3/4 = 5 i 24/28 - 21/28 = 5 i 3/28
