Treść zadania

Najlepsze rozwiązanie

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  3 0

  sonar 2.10.2011 (18:12)

  5/7*4,2-(1 i 1/4 - 0,5)=
  
  = 5/7 * 4 i 2/10 - ( 1 i 1/4 - 5/10)=
  
  = 5/7 * 42/10 - ( 1 i 1/4 - 1/2) =(skracam 5 z 10 oraz 7 z 42)
  
  = 1/1 * 6/2 - ( 5/4 - 2/4)=
  
  = 6/2 - 3/4=
  
  = 3 - 3/4=
  
  = 2 i 4/4 - 3/4=
  
  = 2 i 1/4
  
  
  
  
  
  
  
  6,5:(2 i 1/4 * 6-0,5) =
  
  = 6 i 5/10 : ( 9/4 * 6 - 5/10)= (skracam 4 z 6)
  
  = 6 i 1/2 : (9/2 * 3 - 1/2)=
  
  = 6 i 1/2 : (27/2 - 1/2)=
  
  = 13/2 : 26/2=
  
  = 13/2 * 2/26= (skracam 13 z 26 oraz 2 z 2)
  
  = 1/1 * 1/2=
  
  = 1/2
  
  
  
  
  
  
  
  (5-1 i 1/2):(2 i 3/8-1,75) =
  
  = (4 i 2/2 - 1 i 1/2 ) : ( 2 i 3/8 - 1 i 75/100) =
  
  = 3 i 1/2 : ( 2 i 3/8 - 1 i 3/4)=
  
  = 7/2 : ( 2 i 3/8 - 1 i 6/8)=
  
  = 7/2 : ( 1 i 11/8 - 1 i 6/8)=
  
  = 7/2 : 5/8=
  
  = 7/2 * 8/5= ( skracam 2 z 8)
  
  = 7/1 * 4/5=
  
  = 28/5=
  
  = 5 i 3/5
  
  
  
  
  
  
  
  
  3 i 3/4*0,8+2 i 2/3*0,3 =
  
  = 15/4 * 8/10 + 8/3 * 3/10 = ( skracam 15 z10, 4 z 8, 8 z 10 oraz 3 z3)
  
  = 3/1 * 2/2 + 4/1 * 1/5=
  
  = 6/2 + 4/5=
  
  = 3 + 4/5=
  
  = 3 i 4/5
  
  
  
  
  
  
  
  
  4 i 1/2 - 2,4:2 i 2/3+1,4=
  
  = 4 i 1/2 - 2 i 4/10 : 2 i 2/3 + 1 i 4/10 =
  
  = 4 i 1/2 - 24/10 : 8/3 + 1 i 4/10=
  
  = 4 i 1/2 - 24/10 * 3/8 + 1 i 4/10 = (skracam 24 z 8)
  
  = 4 i 1/2 - 3/10 * 3/1 + 1 i 4/10=
  
  = 4 i 1/2 - 9/10 + 1 i 4/10=
  
  = 4 i 5/10 - 9/10 + 1 i 4/10=
  
  = 3 i 15/10 - 9/10 + 1 i 4/10=
  
  = 3 i 6/10 + 1 i 4/10=
  
  = 4 i 10/10=
  
  = 5

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