Question

A)2 * 1 i 1/4 - 1/8 :9 =
B) (2 * 1 i 1/4 - 1/8) : 9=
C) 2 * (1 i 1/4 - 1/8 : 9 ) =
D) 2 * (1 i 1/4 - 1/8 ) :9 =

Proszę o rozwiązanie :)

Answer 1

A)2·1 i 1/4 - 1/8÷9 = 2·5/4- 1/8·1/9 = 5/2-1/72 = 180/72-1/72 = 179/72 = 2 35/72 = 

   2 2/9
B) (2·1 i 1/4 - 1/8)÷9 = (2·5/4-1/8)÷9 = (20/8-1/8)÷9 = 19/8·1/9 = 19/72
C) 2·(1 i 1/4 - 1/8÷9 ) = 2·(5/4-1/8·1/9) = 2·(5/4-1/72) = 2·(90/72-1/72) = 2·89/72 =

    178/72 = 2 34/72 = 2 17/36
D) 2·(1 i 1/4 - 1/8 )÷9 = 2·(10/8-1/8)÷9 = 2·9/8÷9 = 18/8·1/9 = 2/8 = 1/4