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

Toán Lớp 6: tìm x,y biết 2x+5/3=2y-1/4=2x-2y+6/3x

Toán Lớp 6: tìm x,y biết 2x+5/3=2y-1/4=2x-2y+6/3x

Comments ( 1 )

  1. Giải đáp:
    2x+5/3=2y-1/4 
    => 2y = 2x + 23/12
    =>2y-1/4=2x-2y+6/3x 
    => 2x + 23/12  = 2x – 2x – 23/12 + 6/3x
    => 2x = -23/6 + 6/3x
    => x 
    => y
     

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