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 9: `40=1/{1/120+{2/3}/{(30+1/2x)}}` Tìm x giúp mình

Tháng Hai 13, 2023 Toán học 2 Comments 0 views

Toán Lớp 9: 40=1/{1/120+{2/3}/{(30+1/2x)}}
Tìm x giúp mình

Comments ( 2 )

  1. thucquyenlan
    thucquyenlan
    13 Tháng Hai, 2023 at 4:55 chiều
    Reply
    1/(1/120+(2/3)/(30+1/2x))=40
    =>1/120+(2/3)/(30+1/2x)=1/40
    =>(2/3)/(30+1/2x)=1/60
    =>30+1/2x=40
    =>1/2x=10
    =>x=20
     

  2. maingoctruc
    maingoctruc
    13 Tháng Hai, 2023 at 4:55 chiều
    Reply
    40 = 1/( 1/120 + {2/3}/{ 30 + 1/2 x })
    ⇔ 40 = 1 : ( 1/120 + {2/3}/{ 30 + 1/2 x} )
    ⇔ 1/40 = 1/120 + 2/3 : ( 30 + 1/2 x )
    ⇔ 1/60 = 2/3 : ( 30 + 1/2 x )
    ⇔ 40 = 30 + 1/2 x
    ⇔ 10 = 1/2 x
    ⇔ x = 20

Leave a reply

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

Quỳnh Nhi

About Quỳnh Nhi