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

Toán Lớp 6: 1/2 (x -2) – 2 (1 – 1/2 x) = 1

Toán Lớp 6: 1/2 (x -2) – 2 (1 – 1/2 x) = 1

Comments ( 2 )

  1. 1/2 (x -2) – 2 (1 – 1/2 x) = 1
    ⇔1/2x-1-2+x=1
    ⇔1/2x-1-2+x-1=0
    ⇔3/2x-4=0
    ⇔3/2x=4
    ⇔x=4:3/2
    ⇔x=8/3
    Vậy x=8/3

  2. Giải đáp:
    $\dfrac{1}{2}$ (x -2) – 2 (1 -$\dfrac{1}{2}$ x) = 1
    $\dfrac{1}{2}$ x-$\dfrac{1}{2}$ .2 – 2.$\dfrac{1}{2}$ x=1
      $\dfrac{1}{2}$ x-1      –   2 + x=1
      ($\dfrac{1}{2}$+1)x – (1-2) = 1
       $\dfrac{3}{2}$ x-3     = 1+3
          $\dfrac{3}{2}$ x    = 4
             x         =4: $\dfrac{3}{2}$ 
             x         =$\dfrac{8}{3}$ 
    Cho bạn ấy ctlh nha
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222-9+11+12:2*14+14 = ? ( )