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

Toán Lớp 6: `(12,75 . 4/25 . 1,8)/(1 1/2 . 2,04 : 20)`

Tháng Hai 19, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: (12,75 . 4/25 . 1,8)/(1 1/2 . 2,04 : 20)

Comments ( 2 )

  1. tonhitruc
    tonhitruc
    19 Tháng Hai, 2023 at 2:00 sáng
    Reply
    Giải đáp:
    $\\$
    $\dfrac{ 12,75 × \dfrac{4}{25} × 1,8}{1 \dfrac{1}{2} × 2,04 ÷ 20}$
    $= \dfrac{ \dfrac{51}{4} × \dfrac{4}{25} × \dfrac{9}{5} }{ \dfrac{3}{2} × \dfrac{51}{21} × \dfrac{1}{20} }$
    $= \dfrac{ \dfrac{51}{25} × \dfrac{4}{4} × \dfrac{9}{5} }{ \dfrac{3}{2} × \dfrac{51}{21} × \dfrac{1}{20} }$
    $= \dfrac{1 × \dfrac{9}{5} }{ \dfrac{3}{2} × \dfrac{1}{20} }$
    $= \dfrac{ \dfrac{9}{5} }{\dfrac{3}{40} }$
    = 9/5 ÷ 3/40
    =9/5 × 40/3
    = 24
     

  2. quynhmaithu
    quynhmaithu
    19 Tháng Hai, 2023 at 1:59 sáng
    Reply
    Giải đáp:
     (12,75 . 4/25 . 1,8)/(1 1/2 . 2,04 : 20)
    = (51/25 . 4/25 . 9/5)/(3/2 . 51/25 . 1/20)
    = (51/25 . 9/5)/(3/40 . 51/25)
    = (9/5)/(3/40)
    = 9/5 . 40/3
    = 24
     

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

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