Question

Oblicz ??
a) 1 5/12 - 9/ 8 - 2 5/6
b) 6 3/4 - 2 2/3 - 3 1 / 6
c) 2 2 / 9 3 - 5/6 + 5 1/3
d) 2 2/9 + 1 5/12 - 7/8

Answer 1

A)
1 i 5/12 - 9/ 8 - 2 i 5/6 =

= 1 i 10/24 - 1 i 1/8 - 2 i 20/24=

= 1 i 10/24 - 1 i 3/24 - 2 i 20/24=

= 7/24  - 2 i 20/24=

= - 2 i 13/24




b)
6 i 3/4 - 2 i 2/3 - 3 i 1/6 =

= 6 i 9/12 - 2 i 8/12 - 3 i 2/12=

= 2 i 1/12 - 3 i 2/12 =

= -1 i 1/12



c)
2 i  2/93 - 5/6 + 5 i 1/3=

= 2 i 4/186 - 155/186 + 5 i 62/186=

= 1 i 190/186 - 155/186 + 5 i 62/186 =

= 1 i 35/186 + 5 i 62/186 =

= 6 i 97/186


d)
2 i 2/9 + 1 i 5/12 - 7/8=

= 2 i 16/72 + 1 i 30/72 - 63/72 =

= 3 i 46/72 - 63/72 =

= 2 i 118/72 - 63/72=

= 2 i 55/72