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

Toán Lớp 6: Tìm x biết 20 21 – 5 (× +4)=1 bằng bao nhiêu

Toán Lớp 6: Tìm x biết 20 21 – 5 (× +4)=1 bằng bao nhiêu

Comments ( 2 )

  1. $\text{2021 – 5( x + 4 ) = 1}$
    $\text{5( x + 4 ) = 2021 – 1}$
    $\text{5( x + 4 ) = 2020}$
    $\text{x + 4 = 2020 : 5}$
    $\text{x + 4 = 404}$
    $\text{x = 404 – 4}$
    $\text{x = 400}$
    $\text{Vậy x = 400}$

  2. $ 2021-5(x+4)=1 $ 
    $ 5(x+4)=2021-1=2020 $ 
    $ x+4=2020:5=404 $ 
    $ x=404-4=400 $ 
    ” Xin hay nhất “
     

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

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