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

Toán Lớp 5: 1/tìm: 5/21 : y = 5/7 y × 32/4 =

Toán Lớp 5: 1/tìm:
5/21 : y = 5/7
y × 32/4 =

Comments ( 2 )

  1. $\text{#Chớp#}$
    $\text{ $\dfrac{5}{21}$ : y = $\dfrac{ 5}{7}$}$
    $\text{                           y = $\dfrac{5}{21}$ : $\dfrac{5}{7}$}$
    $\text{                           y = $\dfrac{1}{3}$}$
    $\text{ b ) y x $\dfrac{32}{4}$ = $\dfrac{5}{12}$ }$
    $\text{      y                             = $\dfrac{5}{12}$ :  $\dfrac{32}{4}$ }$
    $\text{      y                             = $\dfrac{5}{96}$}$
     

  2. Giải đáp + Lời giải và giải thích chi tiết:
     5/21 : y = 5/7
    x= 5/21 : 5/7
    x= 5/21 . 7/5
    x= 7/21
    x= 1/3
    Vậy x=1/3
       y × 32/4 = 5/12
    y × 8 = 5/12
    y = 5/12 : 8
    y = 5/12 × 1/8
    y= 5/96
    Vậy y=5/96

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

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