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: 3x-5=22 ; 18-2x=14 giải giúp em với ạ

Toán Lớp 6: 3x-5=22 ; 18-2x=14 giải giúp em với ạ

Comments ( 2 )

  1. 3x-5=22
    ⇔3x=22+5=27
    ⇔x=27:3=9
    b,
    18-2x=14
    ⇔2x=18-14=4
    ⇔x=4:2=2

  2. 3x – 5 = 22
    $\Rightarrow$ 3x = 22 + 5
    $\Rightarrow$ 3x = 27
    $\Rightarrow$ x = 27 : 3
    $\Rightarrow$ x = 9
    $\text{Vậy}$ x = 9
    _________________
    18 – 2x = 14
    $\Rightarrow$ 2x = 18 – 14
    $\Rightarrow$ 2x = 4
    $\Rightarrow$ x = 4 : 2
    $\Rightarrow$ x = 2
    $\text{Vậy}$ x = 2
     

Leave a reply

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