Question

Oblicz pamietaj o kolejnosci wykonywania dzialan ( * = razy )
a) 1 2/3 : 2 1/2 + 9 *1 1/6
b) (1 1/2) do potegi 2 - 13/5 : 2 2/3
c) 3 1/4 : [( 2 5/8 - 1 1/6) : 2 1/2]

Answer 1

a) 1 2/3 : 2 1/2 + 9 *1 1/6 =
5/3 : 5/2 + 9/1 x 7/6 = ( 9 skracamy na 3, 6 skracamy na 2)
5/3 x 2/5 + 3/1 x 7/2 =( 5 skracamy na 1, 5 skracamy na 1 )
1/3 x 2/1 + 3/1 x 7/2 =
2/3 + 21/2 = 23/2 = 11 i 1/2



b) (1 1/2) do potegi 2 - 13/5 : 2 2/3 =
(3/2) do potęgi 2 - 13/5 : 8/3 =
9/4 - 13/5 x 3/8 =
9/4 - 39/40 =
90/40 - 39/40 = 51/40 = 1 i 11/40