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 2: Giúp em với ạ ! 3x+4=7 x+8=17 9-x=5

Toán Lớp 2: Giúp em với ạ !
3x+4=7
x+8=17
9-x=5

Comments ( 2 )

  1. a,
    3x+4=7
    ⇔3x=3
    ⇔x=1
    b,
    x+8=17
    ⇔x=17-8
    ⇔x=9
    c,
    9-x=5
    ⇔x=9-5
    ⇔x=4

  2.     3x $\text{+ 4 = 7}$
        3x $\text{= 7 – 4}$
        3x $\text{= 3}$
        x $\text{= 3 : 3}$
    ⇒    x $\text{= 1.}$
    —–
      x $\text{+ 8 = 17}$
      x $\text{= 17 – 8}$
    ⇒  x $\text{= 9.}$
    —–
      9 – x = 5
               x $\text{= 9 – 5}$
    ⇒        x $\text{= 4.}$
    $\text{@mamthemmuoi}$

Leave a reply

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

About Hòa Tâm