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

Toán Lớp 6: $\frac{2x}{3}$= $\frac{x-5}{4}$ Giups minhf voiws

Toán Lớp 6: $\frac{2x}{3}$= $\frac{x-5}{4}$
Giups minhf voiws

Comments ( 1 )

  1. {2x}/3 = {x-5}/4
    => 8x = 3. ( x – 5 )
    => 8x = 3x – 15
    => 8x – 3x = -15
    => 5x = -15
    => x = ( -15 ) : 5
    => x = -3
      $\text{ Vậy x = -3 }$
     

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