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 7: $\frac{-2}{7}$ .$\frac{21}{8}$ bài dễ mà đ ko

Toán Lớp 7: $\frac{-2}{7}$ .$\frac{21}{8}$
bài dễ mà đ ko

Comments ( 2 )

  1. -2/7 . 21/8
    =(-2.21)/(7.8)
    =-42/56
    =-3/4
     

  2. $\dfrac{-2}{7}$ $\text{x}$ $\dfrac{21}{8}$ 
    $\text{=}$ $\dfrac{-1}{1}$ $\text{x}$ $\dfrac{3}{-4}$
    $\text{=}$ $\dfrac{-1}{1}$ $\text{x}$ $\dfrac{-3}{4}$
    $\text{=}$ $\dfrac{3}{4}$
    #BanhQuyy
     

Leave a reply

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

About Mai