Odpowiedź :
Odpowiedź:
5 i 1/3 - (2 i 1/9 - 1 i 5/6) = 5 i 1/3 - (2 i 2/18 - 1 i 15/18) = 5 i 1/3 - (1 i 20/18 - 1 i 15/18) = 5 i 1/3 - 5/18 = 5 i 6/18 - 5/18 = 5 i 1/18
1 i 3/5 : 2/3 + 1 i 1/3 * 3/4 = 8/5 * 3/2 + 4/3 * 3/4 = 12/5 + 1 = 1 i 12/5 = 3 i 2/5