Odpowiedź:
a) 1/2 + 1/4 = 2/4 + 1/4 = 3/4
b) 3/4 + 1/2 = 3/4 + 2/4 = 5/4 = 1 i 1/4
c) 2 i 3/4 - 1/2 = 2 i 3/4 - 2/4 = 2 i 1/4
d) 1 i 1/4 - 1/2 = 1 i 1/4 - 2/4 = 5/4 - 2/4 = 3/4
e) 2 i 1/2 - 3/4 = 2 i 2/4 - 3/4 = 1 i 6/4 - 3/4 = 1 i 3/4
f) 3 i 3/4 + 2 i 1/2 = 3 i 3/4 + 2 i 2/4 = 5 i 5/4 = 6 i 1/4
g) 15 i 1/2 + 6 i 3/4 = 15 i 2/4 + 6 i 3/4 = 21 i 5/4 = 22 i 1/4
h) 12 i 1/4 - 8 i 1/2 = 12 i 1/4 - 8 i 2/4 = 11 i 5/4 - 8 i 2/4 = 3 i 3/4
