Question

- ( 4- 1/4 ) : ( - 3/4 + 3 ) =
2 : (4,9 * 2 1/7 ) =
5 2/3 : 0,3 : 13,6 =
* - razy

Answer 1

- ( 4 - 1/4) : (-3/4 + 3)=

= - 3 i 3/4 : 2 i 1/4 =

= - 15/4 : 9/4=

= - 15/4 * 4/9= (skracam ułamki)

= - 5/1 * 1/3=

= - 5/3=

= - 1 i 2/3




2 : (4,9 * 2 i 1/7 ) = 

= 2 : ( 4 i 9/10 * 15/7) =

= 2 : ( 49/10 * 15/7) = (skracam ułamki)

= 2 : (7/2 * 3/1) =

= 2 : 21/2=

= 2 * 2/21 =

= 4/21



5  i 2/3 : 0,3 : 13,6 = 

= 17/3 : 3/10 : 13 i 6/10 =

= 17/3 * 10/3 : 136/10=

= 17/3 * 10/3 * 10/136 = (skracam 17 ze 136)

= 1/3 * 10/3 * 10/8 = (skracam 10 z 8)

= 1/3 * 5/3 * 10/4=

= 50/36=

= 1 i 14/36=

= 1 i 7/18

Answer 2

- ( 4- 1/4 ) : ( - 3/4 + 3 ) = -4+1/4 : -3/4+3= -3,75: (-0,75+3)= -15/4:-2,25= -15/4 *4/9=5/3=1i 2/3