Treść zadania

Najlepsze rozwiązanie

• 

  2 0

  sonar 24.10.2011 (21:13)

  A.
  -3/4-5/6=
  
  = - 9/12 - 10/12=
  
  = - 19/12=
  
  = - 1 i 7/12
  
  
  
  B.
  -0,5+1 i 2/3*0,6=
  
  = - 5/10 + 1 i 2/3 * 6/10 =
  
  = - 5/10 + 5/3 * 6/10 = ( skracam 5 z 10 oraz 3 z 6)
  
  = - 5/10 + 1/1 * 2/2=
  
  = - 1/2 + 2/2=
  
  = -1/2 + 1=
  
  = 1/2
  
  
  
  C.
  5-1 i 2/3=
  
  = 4 i 3/3 - 1 i 2/3=
  
  = 3 i 1/3
  
  
  
  D.
  3/2= 1 i 1/2
  
  
  
  E.
  5,86-12,3= - 6,44
  
  
  
  F
  -.2/25*123,4-15,52=
  
  = - 8/100 * 123,4 - 15,52=
  
  = - 0,8 * 123,4 - 15,52 =
  
  = - 98,72 - 15,52
  
  = - 114,24
  
  
  
  G.
  (-3)*(-2/3)*(-1 i 1/2)= ( skracam 3 z 3)
  
  = (-1) * (-2/1) *(-3/2) =
  
  = 2/1 * (-3/2) = ( skracam 2 z 2)
  
  = 1/1 * (-3/1) =
  
  = - 3/1=
  
  = - 3
  
  
  
  H.
  2,7-4 i 2/5*1/2=
  
  = 2 i 7/10 - 22/5 * 1/2 = ( skracam 22 z 2)
  
  = 2 i 7/10 - 11/5 * 1/1=
  
  = 2 i 7/10 - 11/5=
  
  = 2 i 7/10 - 2 i 1/5=
  
  = 2 i 7/10 - 2 i 2/10=
  
  = 5/10=
  
  = 1/2
  
  
  
  
  I.
  (-2/7)*(-1 i 1/3)*0*5=
  
  = 0
  
  
  
  J.
  (-1 i 1/8)*(-8/9)*1=
  
  = (-9/8) * (-8/9) * 1= ( skracam 9 z 9 oraz 8 z 8)
  
  = ( -1/1) * (-1/1) * 1=
  
  = 1 * 1=
  
  = 1
  
  
  
  K.
  1 i 1/5:(-0,6)=
  
  = 1 i 2/10 : (-0,6)=
  
  = 1,2 : (-0,6)=
  
  = -2
  
  
  
  L.
  0,07*1 i 1/2=
  
  = 0,07 * 1 i 5/10 =
  
  = 0,07 * 1,5=
  
  = 0,105
  
  
  
  Ł
  -3/4+3/50+0,75-0,06=
  
  = - 75/100 + 6/100 + 0,75 - 0,06=
  
  = - 0,75 + 0,06 + 0,75 - 0,06 =
  
  = - 0,75 + 0,75 + 0,06 - 0,06 =
  
  = 0
  
  
  
  
  M.
  0,1:10*100=
  
  = 0,01 * 100 =
  
  = 1
  
  
  
  N.
  -4 i 1/2+2 i 1/2=2
  
  
  
  O.
  113 i 1/3-55:5,5=
  
  = 113 i 1/3 - 10=
  
  = 103 i 1/3
  
  
  
  P.
  (-0,2)^3=
  
  = - 0,008
  
  
  R.
  (1 i 2/3)^2=
  
  = (5/3)^2=
  
  = 25/9=
  
  = 2 i 7/9
  
  
  
  S.0,300=0,30= 0,3

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