Odpowiedź:
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 = 2 i 21/12 - 2 i 8/12 + 6 - 3 i 10/12 = 13/12 + 6 - 3 i 10/12 = 6 i 13/12 - 3 i 10/12 = 3 i 3/12 = 3 i 1/4
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 15/60 + 2 i 24/60 - 1 i 2/3 = 5 i 39/60 - 1 i 40/60 = 4 i 99/60 - 1 i 40/60 = 3 i 59/60
