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

Toán Lớp 6: Tìm ƯC (48;120;150) BC (26;78)

Toán Lớp 6: Tìm ƯC (48;120;150)
BC (26;78)

Comments ( 2 )

  1. Lời giải chi tiết:
    $*$)Ta có:
    48=2^4xx3
    120=2^3xx3xx5
    150=2xx3xx5^2
    =>ƯCLN(48,120,150)=2xx3=6
    =>ƯC(48,120,150)={±1;±2;±3;±6}
    $*$) Ta có:
    26=2xx13
    78=2xx3xx13
    =>BCNN(26,78)=2xx3xx13=78
    =>BC(26,78)={0;78;156;234;312;390;468;…}
                                                 
    @uniquetimehunter
                                                  

  2. 48=2^4 x 3
    120=2^3 x 3 x 5
    150= 2 x 3 x 5^2
    => ƯCLN(48; 120; 150)=2 x 3 = 6
    <=> ƯC(48; 120; 150)=6000
     

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

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