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: Tìm x : 1 . | 2X – 3,5 | = 6,5 2 . | 3X + 4/5 | – 1/2 = 0 3 . | 3/8 – 1/4 × X | = 1/4 Giúp với ạ

Tháng Hai 9, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: Tìm x :
1 . | 2X – 3,5 | = 6,5
2 . | 3X + 4/5 | – 1/2 = 0
3 . | 3/8 – 1/4 × X | = 1/4
Giúp với ạ

Comments ( 2 )

  1. ngoclandiep
    ngoclandiep
    9 Tháng Hai, 2023 at 6:48 chiều
    Reply
    Xin hay nhất

    toan-lop-6-tim-1-2-3-5-6-5-2-3-4-5-1-2-0-3-3-8-1-4-1-4-giup-voi-a

  2. hauthanhyen98
    hauthanhyen98
    9 Tháng Hai, 2023 at 6:48 chiều
    Reply
    1.
    |2x – 3,5| = 6,5
    => \(\left[ \begin{array}{l}2x – 3,5 = 6,5\\x – 3,5 = -6,5\end{array} \right.\) 
    => \(\left[ \begin{array}{l}x=5\\x=-3\end{array} \right.\) 
    2.
    |3x – 4/5| – 1/2 = 0
    => |3x – 4/5| = 1/2
    => \(\left[ \begin{array}{l}3x – \dfrac{4}{5} = \dfrac{1}{2}\\3x – \dfrac{4}{5}= \dfrac{-1}{2}\end{array} \right.\) 
    => \(\left[ \begin{array}{l}x=\dfrac{13}{30}\\x=\dfrac{1}{10}\end{array} \right.\) 
    3.
    |3/8 – 1/4 × x| = 1/4
    => \(\left[ \begin{array}{l}\dfrac{3}{8} – \dfrac{1}{4} × x = \dfrac{1}{4}\\\dfrac{3}{8} – \dfrac{1}{4} × x = \dfrac{-1}{4}\end{array} \right.\) 
    => \(\left[ \begin{array}{l}x=\dfrac{1}{2}\\x=\dfrac{5}{2}\end{array} \right.\) 

Leave a reply

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

Thanh Tú

About Thanh Tú