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

Toán Lớp 7: 2/5+(–2/3)-(-5/2) =? Ạ e cần gấp=(

Toán Lớp 7: 2/5+(–2/3)-(-5/2) =? Ạ e cần gấp=(

Comments ( 2 )

  1. 2/5 + (-2/3) – (-5/2)
    = 2/5 + (-2)/3 + 5/2
    = -4/15 + 5/2
    = 67/30
    @Rin

  2. Lời giải và giải thích chi tiết:
    2/5 + (-2/3) – (-5/2)
    = 2/5 – 2/3 + 5/2
    = 12/30 – 20/30 + 75/30
    = 67/30

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

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