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: 30-20(x+6)=130 help vs giair theo cách dễ nhất

Toán Lớp 6: 30-20(x+6)=130 help vs giair theo cách dễ nhất

Comments ( 2 )

  1. 30 – 20 . (x + 6) = 130 
           20 . (x + 6) = 30 – 130
           20 . (x + 6) = -100
                   x + 6  = -100 : 20
                   x + 6  = -5
                   x         = -5 – 6
                   x         = -11
     Vậy x  =  -11

  2. #Lp
    30 – 20 ( x + 6 ) = 130
    => 20 ( x + 6 ) = 30 – 130
    => 20 ( x + 6 ) = -100
    => 20 . x + 20 . 6 = -100
    => 20 . x + 120 = -100
    => 20 . x = (-100) – 120
    => 20 . x = -220
    => x = -220 : 20
    => x = -11
    Vậy x = -11

Leave a reply

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