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

Toán Lớp 4: x +3/4=4/3,7/12+x=3/2,x-3/11=9/22,9/2-x=2/9 tìm x phân số

Toán Lớp 4: x +3/4=4/3,7/12+x=3/2,x-3/11=9/22,9/2-x=2/9
tìm x phân số

Comments ( 2 )

  1. x + 3/4 = 4/3
     x        = 4/3 – 3/4
    x          = 7/12
    Vậy x = 7/12
    $\\$
    7/12 + x = 3/2
               x = 3/2 – 7/12
              x = 11/12
    Vậy x = 11/12
    $\\$
    x – 3/11 = 9/22
     x       = 9/22 + 3/11
    x         = 15/22
    Vậy x = 15/22
    $\\$
    9/2 – x = 2/9
            x  = 9/2 – 2/9
             x = 77/18
    Vậy x = 77/18

  2. x + 3/4 = 4/3
    x = 4/3 – 3/4
    x = 7/12
    ____________
    7/12 + x = 3/2
    x = 3/2 – 7/12
    x = 11/12
    ____________
    x – 3/11 = 9/22
    x = 9/22 + 3/11
    x = 15/22
    _________________
    9/2 – x = 2/9
    x = 9/2 – 2/9
    x = 77/18

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

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