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

Toán Lớp 7: `(`81/12`-`9/4`)`.`(2/9)^2`-`2/9`

Home/ Toán Lớp 7: `(`81/12`-`9/4`)`.`(2/9)^2`-`2/9`

Toán Lớp 7: `(`81/12`-`9/4`)`.`(2/9)^2`-`2/9`

Tháng Ba 10, 2023 Toán học 2 Comments 0 views

Toán Lớp 7: (81/12-9/4).(2/9)^2-2/9

Comments ( 2 )

  1. truongthanhhung
    truongthanhhung
    10 Tháng Ba, 2023 at 5:48 chiều
    Reply
    Giải đáp:
    (81/12 – 9/4) . (2/9)^2 – 2/9
    = 9/2 . (2/9)^2 – 2/9
    = 2/9 . ( 9/2 . 2/9 – 1 )
    = 2/9 . ( 1 – 1)
    = 2/9 . 0 = 0
     

  2. cobebongdem
    cobebongdem
    10 Tháng Ba, 2023 at 5:48 chiều
    Reply
    ( 81/12 – 9/4 ) . ( 2/9 )^2 – 2/9
    = ( 27/4 – 9/4 ) . 4/81 – 2/9
    = 9/2 . 4/81 – 2/9
    = 2/9 – 4/18
    = 4/18 – 4/18
    = 0

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

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