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: Cho biểu thức: A = ( 6 – 2/3 + 1/2) – ( 5 + 5/3 – 3/2) – (3 – 7/3 + 5/2)

Tháng Mười 2, 2022 Toán học 2 Comments 0 views

Toán Lớp 7: Cho biểu thức:
A = ( 6 – 2/3 + 1/2) – ( 5 + 5/3 – 3/2) – (3 – 7/3 + 5/2)

Comments ( 2 )

  1. maitrucloan
    maitrucloan
    2 Tháng Mười, 2022 at 6:29 sáng
    Reply
    Lời giải và giải thích chi tiết :
    A = ( 6 – 2/3 + 1/2 ) – ( 5 + 5/3 – 3/2 ) – ( 3 – 7/3 + 5/2 )
    A = 6 – 2/3 + 1/2 – 5 + 5/3 – 3/2 – 3 – 7/3 + 5/2
    A = ( 6 – 5 – 3 ) + ( – 2/3 – 5/3 + 7/3 ) + ( 1/2 + 3/2 – 5/2 )
    A = – 2 + 0 + ( – 1/2 )
    A = – 2 + ( – 1/2 )
    A = – 4/2 + ( – 1/2 )
    A = – 5/2
     

  2. quynhthanhnghi
    quynhthanhnghi
    2 Tháng Mười, 2022 at 6:29 sáng
    Reply
    A = ( 6 – 2/3 + 1/2) – ( 5 + 5/3 – 3/2) – ( 3 – 7/3 + 5/2)
    = 6 – 2/3 + 1/2 – 5 – 5/3 + 3/2 – 3 + 6/3 – 5/2
    = ( 6 – 5 – 3) – ( 2/3 + 5/3 – 7/3) + ( 1/2 + 3/2 – 5/2)
    =-2 – 0 + (-1)/2
    =-2 – 1/2
    =-4/2 – 1/2
    = -5/2
    Vậy A = -5/2
    #caty09

Leave a reply

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

Ngọc Ðàn

About Ngọc Ðàn