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 8: 3x(12x-4)-9x(4x-3)=30 Help meeeeeeeeeeeeeeeeeeeeeeeeeeee

Toán Lớp 8: 3x(12x-4)-9x(4x-3)=30
Help meeeeeeeeeeeeeeeeeeeeeeeeeeee

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    3x(12x – 4) – 9x(4x – 3) = 30
    3x.12x – 3x.4 – (9x.4x – 9x.3) = 30
    36x^2 – 12x– 36x^2+27x = 30
    (36x^2 – 36x^2)+(27x – 12x) = 30
    15x = 30
    x=2
    Vậy x = 2.
    #Quangcuong247
     

  2. 3x(12x-4)-9x(4x-3)=30
    36x²-12x-36x²+27x=30
    (36x²-36x²)-(12x-27x)=30
                        15x        =30
                            x        =2
     

Leave a reply

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