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

Toán Lớp 5: tìm x : ( x-3/6 ) : 1/2 + 1/2 = 14/24

Tháng Mười Hai 11, 2022 Toán học 2 Comments 0 views

Toán Lớp 5: tìm x :
( x-3/6 ) : 1/2 + 1/2 = 14/24

Comments ( 2 )

  1. thanhmaianh
    thanhmaianh
    11 Tháng Mười Hai, 2022 at 9:03 chiều
    Reply
    $(x-\dfrac{3}{6}):\dfrac{1}{2}+\dfrac{1}{2}=\dfrac{14}{24}$
    $\Leftrightarrow(x-\dfrac{3}{6}):\dfrac{1}{2}=\dfrac{14}{24}-\dfrac{1}{2}$
    $\Leftrightarrow(x-\dfrac{3}{6}):\dfrac{1}{2}=\dfrac{1}{12}$
    $\Leftrightarrow x-\dfrac{3}{6}=\dfrac{1}{12}×\dfrac{1}{2}$
    $\Leftrightarrow x-\dfrac{3}{6}=\dfrac{1}{24}$
    $\Leftrightarrow x=\dfrac{1}{24}+\dfrac{3}{6}$
    $\Leftrightarrow x=\dfrac{13}{24}$
    Vậy $x=\dfrac{13}{24}$

  2. maianh67
    maianh67
    11 Tháng Mười Hai, 2022 at 9:03 chiều
    Reply
    ( x – 3/6) : 1/2 + 1/2 = 14/24
    ( x – 3/6) : 1/2 = 14/24 – 1/2
    ( x – 3/6) : 1/2 = 7/12 – 6/12
    ( x – 3/6) : 1/2= 1/12
    ( x – 3/6) = 1/12 xx 1/2
    x – 3/6 = 1/24
    x = 1/24 + 3/6
    x = 1/24 + 12/24
    x= 13/24
    Vậy x = 13/24

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

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