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

Toán Lớp 6: Tìm x ∈ biết (1-2x).= 3. *Giúp mình với :)))*

Toán Lớp 6: Tìm x ∈ biết
(1-2x).= 3.
*Giúp mình với :)))*

Comments ( 2 )

  1. 1 – 2x = 3
    => 2x = 1 – 3
    => 2x = -2
    => x = ( -2 ) : 2
    => x = -1
     $Vậy$ x = -1

  2. 1 – 2x = 3
    <=> 2x = 1 – 3
    <=> 2x = -2
    <=> x = -1

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

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