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 a, 6.x+4.x =2016 b, x+( x+1 ) + ( x + 2 ) + … + ( x + 100 ) = 10 100 h , x + ( x + 1 ) + ( x + 2 ) + … + ( x + 100 ) = 10

Toán Lớp 6: tìm x
a, 6.x+4.x =2016
b, x+( x+1 ) + ( x + 2 ) + … + ( x + 100 ) = 10 100
h , x + ( x + 1 ) + ( x + 2 ) + … + ( x + 100 ) = 10 100
i , ( x – 5 ) . ( x – 3 ) = 0
j , 7 x + 7x = 800
k , 2. x + x . y = 7
Ai nhanh cho 5 sao

Comments ( 1 )

  1. a, 6x+4x = 2016
       x · (6+4) = 2016
       x · 10 = 2016
              x = 2016 : 10
              x = 2016/10
              x = 1008/5
    Vậy x = 1008/5
    b, x + (x + 1) + (x + 2) +…+ (x +100) = 10100
        x + x + 1  +  x + 2  +…+  x + 100  = 10100
        (x + x + x +…+ x) + (1 + 2 + 3 +…+ 100) = 10100
        101x + 5050 = 10100
        101x = 10100 – 5050
        101x = 5050
              x = 5050 : 101
              x = 50
    Vậy x = 50
    i, (x – 5) · (x – 3) = 0
    Ta có:
    x – 5 = 0                    hoặc                       x – 3 = 0
         x = 0 + 5                                                  x = 0 + 3
         x = 5                                                        x = 3
    Vậy x = 5 hoặc x = 3
    j, 7x +7x = 800
       x · (7 + 7) = 800
       x · 14 = 800
              x = 800 : 14
              x = 800/14
              x = 400/7
    Vậy x = 400/7
    CHÚC BẠN HỌC TỐT
        
       
          
         

Leave a reply

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

About Thanh Thu