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: a ) 1/2 nhân 4/3 + 1/5 b)-2/3+1/2 nhân 3+( -1/5)

Toán Lớp 7: a ) 1/2 nhân 4/3 + 1/5
b)-2/3+1/2 nhân 3+( -1/5)

Comments ( 2 )

  1. a) 1/2 . 4/3 + 1/5
    = 2/3 + 1/5
    = 10/15 + 3/15
    = 13/15
    b) -2/3 + 1/2 . 3 + (-1/5)
    = -2/3 + 3/2 – 1/5
    = -20/30 + 45/30 – 6/30
    = 19/30

  2. Giải:
    a) 1/2 . 4/3 + 1/5
    = 4/6 + 1/5
    = 2/3 + 1/5
    = 10/15 + 3/15
    = 13/15
    b) -2/3 + 1/2 . 3 + (-1/5)
    =  -2/3 + 3/2 + (-1/5)
    = -4/6 + 9/6 + (-1/5)
    = 5/6 + (-1/5)
    = 25/30 + -6/30
    = 19/30
     

Leave a reply

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

About Audrey