Odpowiedź:
a)
2 i 2/3 + 2 i 3/5 + 1/3 =
= 2 i 2/3 + 1/3 + 2 i 3/5=
= 3 + 2 i 3/5=
= 5 i 3/5
b)
7/9 + 1 i 3/4 + 1/4 =
= 7/9 + 2 =
= 2 i 7/9
c)
2i 5/7 + 7 i 2/5 + 2i 2/7 + 3 i 3/5=
= 2 i 5/7 + 2 i 2/7 + 7 i 2/5 + 3 i 3/5=
= 5 + 11 =
= 16
d)
2 i 3/4 + 1 i 1/6 + 4 i 5/6 + 1 i 2/4=
= 2 i 3/4 + 1 i 2/4 + 1 i 1/6 + 4 i 5/6=
= 4 i 1/4 + 6=
= 10 i 1/4
Szczegółowe wyjaśnienie: