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

Toán Lớp 7: $\frac{5}{24}$ . $\frac{11}{20}$ + $\frac{5}{24}$ . $\frac{9}{20}$

Toán Lớp 7: $\frac{5}{24}$ . $\frac{11}{20}$ + $\frac{5}{24}$ . $\frac{9}{20}$

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    5/24 . 11/20 + 5/24 . 9/20
    = 5/24 . (11/20 + 9/20)
    = 5/24 . (20/20)
    = 5/24 . 1
    = 5/24

  2. $\text{#chớp#}$
    $\text{$\dfrac{5}{24}$ .  $\dfrac{11}{20}$ + $\dfrac{5}{24}$ . $\dfrac{9}{20}$ }$
    $\text{=$\dfrac{5}{24}$ .  ($\dfrac{11}{20}$ +  $\dfrac{9}{20}$ )  }$
    $\text{= $\dfrac{5}{24}$ . $\dfrac{20}{20}$ }$
    $\text{= $\dfrac{5}{24}$ . 1  }$
    $\text{= $\dfrac{5}{24}$}$

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

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