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 7: Giúp mình câu này cảm ơn 0.3x : 3⅓=6:15

Toán Lớp 7: Giúp mình câu này cảm ơn 0.3x : 3⅓=6:15

Comments ( 2 )

  1. ${0,3x:3\dfrac{1}{3}=6:15}$
    ${⇔0,3x:\dfrac{10}{3}=\dfrac{6}{15}}$
    ${⇔0,3x=\dfrac{6}{15}}.\dfrac{10}{3}$
    ${⇔0,3x=\dfrac{4}{3}}$
    ${⇔x=\dfrac{40}{9}}$
    Vậy ${x=\dfrac{40}{9}}$

  2. 0,3.x : 3 1/3 =6:15
    0,3 x : 10/3 = 2/5
    3/10 x =2/5 . 10/3
    3/10 x =4/3
    x=4/3: 3/10
    x=40/9
     

Leave a reply

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