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 5: Tìm x biết : x- 5 phần 21 = 5 phần 14 : 15 phần 18

Toán Lớp 5: Tìm x biết : x- 5 phần 21 = 5 phần 14 : 15 phần 18

Comments ( 2 )

  1. x – 5/21 = 5/14 : 15/18
    x – 5/21 = 5/14 : 5/6
    x – 5/21 = {5.6}/{14.5}
    x – 5/21 = 30/70 = 3/7
    x = 3/7 + 5/21
    x = 9/21 + 5/21
    x = 14/21

  2. $@Shinn$
    $x-\dfrac{5}{21}=$$\dfrac{5}{14}:$$\dfrac{15}{18}$
    $x-\dfrac{5}{21}=$$\dfrac{3}{7}$
    x= $\dfrac{3}{7}+$$\dfrac{5}{21}$
    x= $\dfrac{9+5}{21}$
    x= $\dfrac{2}{3}$

Leave a reply

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