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

Toán Lớp 6: Giúp mình với A=(-135).29-13.135+42.(-65)

Toán Lớp 6: Giúp mình với
A=(-135).29-13.135+42.(-65)

Comments ( 2 )

  1. A=(-135).29-13.135+42.(-65)
    A=(-135).29+13.(-135)+42.(-65)
    A=(-135).(29+13)+42.(-65)
    A=(-135).42+42.(-65)
    A=42.(-135-65)
    A=42.200
    A=-8400
     

  2. A = (-135) * 29 – 13 * 135 + 42 * (-65)
       = 135 * (-29) – 13 * 135 + 42 * (-65)
       = 135 * (-29 – 13) – 42 * 65
       = 135 * (-42) – 42 * 65
       = -42 * (135 + 65)
       = -42 * 200
       = -8400

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

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