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  • 用+.-.X./怎樣使以下算式成立:1 2 3 4 5 6 7=51

    用+.-.X./怎樣使以下算式成立:1 2 3 4 5 6 7=51
    數學人氣:917 ℃時間:2019-11-02 21:08:02
    優(yōu)質解答
    1 :1 + 2 + 3 - 4 + 56 - 7 = 51
    2 :1 + 2 - 3 + 4 + 5 + 6 * 7 = 51
    3 :1 + 2 * 3 + 45 + 6 - 7 = 51
    4 :1 + 2 * 34 - 5 - 6 - 7 = 51
    5 :1 + 23 + 4 + 5 * 6 - 7 = 51
    6 :1 - 2 + 34 + 5 + 6 + 7 = 51
    7 :1 * 2 + 3 + 45 - 6 + 7 = 51
    8 :1 * 2 + 3 * 4 + 5 * 6 + 7 = 51
    9 :1 * 2 + 3 * 4 - 5 + 6 * 7 = 51
    10 :1 * 2 + 3 / 4 * 56 + 7 = 51
    11 :1 * 2 * 3 - 4 + 56 - 7 = 51
    12 :1 / 2 + 345 / 6 - 7 = 51
    13 :12 * 34 / 56 * 7 = 51
    14 :12 / 3 - 4 * 5 + 67 = 51
    Press any key to continue
    1 :-1 + 2 + 3 - 4 * 5 + 67 = 51
    2 :-1 + 2 - 3 + 4 + 56 - 7 = 51
    3 :-1 + 2 - 3 * 4 - 5 + 67 = 51
    4 :-1 + 2 * 3 + 45 - 6 + 7 = 51
    5 :-1 + 2 * 3 * 45 / 6 + 7 = 51
    6 :-1 + 2 * 3 / 4 * 5 * 6 + 7 = 51
    7 :-1 - 2 + 3 + 4 + 5 + 6 * 7 = 51
    8 :-1 - 2 * 3 + 45 + 6 + 7 = 51
    9 :-1 - 2 * 3 - 4 - 5 + 67 = 51
    10 :-1 / 2 * 3 + 45 / 6 * 7 = 51
    Press any key to continue
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