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

Toán Lớp 7: (9/10-15/16).(5/12-11/15-7/20)

Home/ Toán Lớp 7: (9/10-15/16).(5/12-11/15-7/20)

Toán Lớp 7: (9/10-15/16).(5/12-11/15-7/20)

Tháng Tám 12, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: (9/10-15/16).(5/12-11/15-7/20)

Comments ( 2 )

  1. ngocle44
    ngocle44
    12 Tháng Tám, 2022 at 12:02 sáng
    Reply
    ( 9/10 – 15/16 ) . ( 5/12 – 11/15 – 7/20 )
    = ( 144/16 – 15/16 ) . ( 25/60 -44/60 – 21/60 )
    = 129/16 . ( -40/60 )
    = 129/16 . ( -2/3 )
    = -258/48
    = -43/8
     

  2. maianh67
    maianh67
    12 Tháng Tám, 2022 at 12:02 sáng
    Reply
    (9/10-15/16).(5/12-11/15-7/20)
    =(-3/80).(-2/3)
    =((-3).(-2))/(80.3)
    =6/240
    =1/40
     

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

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