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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: thực hiện phép tính : – 17/30 – 11/ -15 + – 7/12

Toán Lớp 6: thực hiện phép tính : – 17/30 – 11/ -15 + – 7/12

Comments ( 2 )

  1. (- 17)/(30) – 11/ -15 + (- 7)/12
    =(- 17)/(30)+ 11/15 + (- 7)/12
    =(-34)/60 +44/60 + (-35)/60
    =(-34+44+ (-35))/60
    =(-25)/60
    =(-5)/12

  2. -17/30 – 11/(-15) + (-7)/12
    = -17/30 + 11/15 – 7/12
    =-34/60 + 44/60 – 35/60
    = -25/60
    = -5/12
     

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222-9+11+12:2*14+14 = ? ( )