Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 6: BC(6,14) BCNN(10,1,12) BC(6,20,30) BCNN(5,14) Em cần gấp ạ

Tháng Bảy 4, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: BC(6,14)
BCNN(10,1,12)
BC(6,20,30)
BCNN(5,14)
Em cần gấp ạ

Comments ( 2 )

  1. thanhthuythu
    thanhthuythu
    4 Tháng Bảy, 2022 at 2:29 sáng
    Reply
    a)6=2.3

    14=2.7

    =>BCNNNN(6;14)=2.3.7=42

    =>B(42)=BC(6;14)={0;42;84;…..}

    b)10=2.5

    1=1

    12=2^2. 3

    =>BCNNNN(10;1;12)=2^2. 3.5=60

    c)6=2.3

    20=2^2. 5

    30=2.3.5

    =>BCNNNN(6;20;30)=2^2. 3.5=60

    =>B(60)=BC(6;20;30)={0;60;120;…..}

    d)5=5

    14=2.7

    =>BCNNNN(5;14)=2.5.7=70

    color{blue}\text{sát thủ 2.0}

  2. cobebongdem
    cobebongdem
    4 Tháng Bảy, 2022 at 2:29 sáng
    Reply
    BC(6,14) 
    B(6) = {0;6;12;18;24;30;36;42;48;54;60;66;72;78;84..}
    B(14) = {0 : 14 ; 28 ; 42 ; 56 ; 70 ; 84 ; 98 ;..} 
    => BC(6,14) = {0 ; 42 ; 84} 
    \text{BCNN}(10,1,12)
    Ta có 10 = 2 . 5
             1 = 1 . 1
             12  = 2 . 6
    => \text{BCNN}(10 , 1 , 12) = 2 . 5 . 1 . 6 = 60
    BC(6 ; 20 ; 30)
    B(6) = {0;6;12;18;24;30;36;42;48;54;60;66;72;78;84;90;96;102;108;114;120…}
    B(20) = {0;40;60;80;100;120…}
    B(30) = {0;60;90;120….}
    => BC(6,20,30} = {0 ; 60 ; 120}
    \text{BCNN}(5,14)
    Ta có : 5 = 5 . 1
               14 = 2 . 7
    => \text{BCNN}(5,14) = 1 . 2 . 5 . 7 = 70 

Leave a reply

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

Nguyệt Minh

About Nguyệt Minh