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

Toán Lớp 3: x-15=25 x-30=56 x+18=50 x+15=61

Toán Lớp 3: x-15=25
x-30=56
x+18=50
x+15=61

Comments ( 2 )

  1. x – 15 = 25
    x = 25 + 15
    x = 40
    Vậy x = 40
    __________________
    x – 30 = 56
    x = 56 + 30
    x = 86
    __________________
    x + 18 = 50
    x = 50 – 18
    x = 32
    ___________
    x + 15 = 61
    x = 61 – 15
    x = 46

  2. x -15 = 25
    x = 25 + 15
    x = 40
    x – 30 = 56
    x = 56 + 30
    x = 86
    x + 18 = 50
    x = 50 – 18
    x = 32
    x + 15 = 61
    x = 61 – 15
    x = 46
     

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

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