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: c) 5(x + 5) – 3(x – 2)= 52+18 giúp mink nhé

Tháng Ba 18, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: c) 5(x + 5) – 3(x – 2)= 52+18 giúp mink nhé

Comments ( 2 )

  1. danvanthu
    danvanthu
    18 Tháng Ba, 2022 at 8:34 sáng
    Reply
    $5\left(x+5\right)-3\left(x-2\right)=52+18$
    $⇒5\left(x+5\right)-3\left(x-2\right)=70$
    $⇒2x+31=70$
     $⇒2x+31-31=70-31$
    $⇒2x=39$
    $⇒\dfrac{2x}{2}=\dfrac{39}{2}$
    $⇒x=\dfrac{39}{2}$
    Vậy $x=\dfrac{39}{2}$

  2. ngoclanhoa
    ngoclanhoa
    18 Tháng Ba, 2022 at 8:33 sáng
    Reply
    Gửi cậu nò (❁´◡❁)
    c)
    5.(x+5)-3.(x-2)=52+18
    =>5.x+5.5-3.x+3.2=70
    =>5x+25-3x+6=70
    =>(5x-3x)+(25+6)=70
    =>2x+31=70
    =>2x=70-31
    =>2x=39
    =>x=39:2
    =>x=19,5
    Vậy x=19,5

Leave a reply

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

Ðan Khanh

About Ðan Khanh