Odpowiedź :
Odpowiedź:
1 i 1/5 - 1/2 + 3/4 + 3/10 = 1 i 4/20 - 10/20 + 15/20 + 6/20 = 24/20 - 10/20 + 15/20 + 6/20 = 14/20 + 15/20 + 6/20 = 35/20 = 1 i 15/20 = 1 i 3/4
(2 i 1/4 - 1 i 2/3) : (1/6 + 2/9) = (2 i 3/12 - 1 i 8/12) : (3/18 + 4/18) = (1 i 15/12 - 1 i 8/12) : 7/18 = 7/18 : 7/18 = 7/18 * 18/7 = 1
5/7 * 4 i 2/3 + 5/6 : 1 i 1/9 = 5/7 * 14/3 + 5/6 : 10/9 = 5/7 * 14/3 + 5/6 * 9/10 = 10/3 + 3/4 = 40/12 + 9/12 = 49/12 = 4 i 1/12
(1/2)³ + 1 i 1/2 : 3/4 = 1/8 + 3/2 * 4/3 = 1/8 + 2 = 2 i 1/8
5/7 * 1 i 3/4 - (1/2)² = 5/7 * 7/4 - 1/4 = 5/4 - 1/4 = 4/4 = 1
(1/3)² * 1 i 1/8 + 1 i 1/2 = 1/27 * 9/8 + 1 i 1/2 = 1/24 + 1 i 1/2 = 1/24 + 1 i 12/24 = 1 i 13/24