Question

Matematyka 6
Cz . 1
Liczby i Wyrażenia Albegraiczne
Str 15 zad 22 .
c ) 3 i 1/4 · ( 2 i 1/4 - 1 i 1/2 : 6 ) =.................................................................
d) 5 i 4/9 - 1 i 1/6 : 3 i 2/3 * ( 1 i 1/4 - 1/2 = .......................................
Daje NAJ i 50 punktów

Answer 1

C )
3 i 1/4 * ( 2 i 1/4 - 1 i 1/2 : 6 ) =

= 13/4 * ( 2 i 1/4 - 3/2 : 6)=

= 13/4 * ( 2 i 1/4 - 3/2 * 1/6) = (skracam 3 z 6)

= 13/4 * ( 2 i 1/4 - 1/2 * 1/2) =

= 13/4 * ( 2 i 1/4 - 1/4 )=

= 13/4 * 2=  (skracam 4 z 2)

= 13/2 * 1=

= 13/2 =

= 6 i 1/2




d)
5 i 4/9 - 1 i 1/6 : 3 i 2/3 * ( 1 i 1/4 - 1/2 )=

= 5 i 4/9 - 7/6 : 11/3 * ( 1 i 1/4 - 2/4)=

= 5 i 4/9 - 7/6 * 3/11 * ( 5/4 - 2/4) = (skracam 6 z 3)

= 5 i 4/9 - 7/2 * 1/11 * 3/4 =

= 5 i 4/9 - 21/48=

= 5 i 64/144 - 63/144=

= 5 i 1/144

Answer 2

C.3 i 1/4 · ( 2 i 1/4 - 1 i 1/2 : 6 ) = 3 i 1/4 · 1 i 1/2 ·1/6= 13/4·1/2·1/2=13/16
d.5 i 4/9 - 1 i 1/6 : 3 i 2/3 * ( 1 i 1/4 - 1/2) =49/9-7/6=42/8