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

Toán Lớp 7: 4 * x – (2 * x + 1) = 3 – 1/3+ x

Toán Lớp 7: 4 * x – (2 * x + 1) = 3 – 1/3+ x

Comments ( 2 )

  1. \text {Mon}
    4 xx x – (2 xx x + 1) = 3 – 1/3 + x
    4 xx x – 2 xx x – 1   = 8/3 + x
    2 xx x – 1                = 8/3 + x
    2 xx x – x                  = 8/3 + 1
    x                               = 11/3
    Vậy x=11/3

  2. 4x – (2x + 1) = 3 – 1/3 + x
    4x – 2x – 1 = 8/3 + x
    2x – 1 = 8/3 + x
    2x – x = 1 + 8/3
    x = 11/3
     

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