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

Toán Lớp 6: tìm ước chung lớn nhất 28,54,96

Toán Lớp 6: tìm ước chung lớn nhất 28,54,96

Comments ( 2 )

  1. $\text{#Chớp#}$
    $\text{Ư ( 28 ) = $2^{2}$ . 7}$
    $\text{Ư ( 54 ) = $3^{3}$ . 2}$
    $\text{Ư ( 96 ) = $2^{5}$ . 3}$
    $\text{UCLN ( 28, 54, 96 ) = 2 $^{5}$ }$
     

  2. Ta có: 28 = $2^{2}$ . 7
              54 = 2 . $3^{3}$ 
              96 = $2^{5}$ . 3
    ⇒ƯCLN(28 ; 54 ; 96) = 2 
    ⇒ƯC(28 ; 54 ; 96) = Ư(2) = {1 ; 2}

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