Odpowiedź:
1/2 + 1/3 + 1/4 = 6/12 + 4/12 + 3/12 = 13/12 = 1 i 1/12
1 i 2/5 + 3 i 4/10 + 2 i 1/2 = 1 i 4/10 + 3 i 4/10 + 2 i 5/10 = 6 i 13/10 = 7 i 3/10
4 i 1/3 - 2 i 2/5 + 1 i 1/5 = 4 i 5/15 - 2 i 6/15 + 1 i 3/15 = 3 i 20/15 - 2 i 6/15 + 1 i 3/15 = 1 i 14/15 + 1 i 3/15 = 2 i 17/15 = 3 i 2/15
7 - 3 i 1/3 - 2 i 1/8 = 6 i 3/3 - 3 i 1/3 - 2 i 1/8 = 3 i 2/3 - 2 i 1/8 = 3 i 16/24 - 2 i 3/24 = 1 i 13/24
3 i 3/4 - 2 i 2/3 + 6 - 3 i 5/6 = 3 i 9/12 - 2 i 8/12 + 6 - 3 i 10/12 = 1 i 1/12 + 6 - 3 i 10/12 = 7 i 1/12 - 3 i 10/12 = 6 i 13/12 - 3 i 10/12 = 3 i 3/12 = 3 i 1/4
10 - (2 i 1/9 - 1/2 + 1 i 5/6) = 10 - (2 i 2/18 - 9/18 + 1 i 15/18) = 10 - (1 i 20/18 - 9/18 + 1 i 15/18) = 10 - (1 i 11/18 + 1 i 15/18) = 10 - 2 i 26/18 = 9 i 18/18 - 2 i 26/18 = 8 i 36/18 - 2 i 26/18 = 6 i 10/18 = 6 i 5/9
3 i 1/4 + 2 i 2/5 - (4 i 1/3 -2 i 2/3) = 3 i 1/4 + 2 i 2/5 - (3 i 4/3 - 2 i 2/3) = 3 i 1/4 + 2 i 2/5 - 1 i 2/3 = 3 i 5/20 + 2 i 8/20 - 1 i 2/3 = 5 i 13/20 - 1 i 2/3 = 5 i 39/60 - 1 i 40/60 = 4 i 99/60 - 2 i 40/60 = 2 i 59/60
