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23.31.21.29.16.17.24.15.11.14用加减乘除法计算得...

1、 3*(11+4-7)=3*8=242、(11-3)*(7-4)=8*3=243、(3-11)*(4-7)=(-8)*(-3)=24

32 27 23 20 18 加减乘除 等于40,

63除以7加11等于20

(20+30-17-19)/1=24

60种算法1. 5+[6+5+8]2. 5+5+8+63. [5+8+5]+64. [8+5+6]+55. 6+[5+5+8]6. 8+5+5+67. 5+8+5+68. 5+[8+6+5]9. 5+6+5+810. 8+[6+5+5]11. 8+[5+5+6]12. 5+[8+5+6]13. 6+5

1: (10 * (8 - 6)) + 4 2: 10 * (8 - 6) + 4 3: (10 - 6) * 4 + 8 4: ((10 - 6) * 4) + 8 5: 8 + (10 - 6) * 4 6: 8 + ((10 - 6) * 4) 7: 8 - (6 - 10) * 4 8: 8 - ((6 - 10) * 4) 9: (8 - 6) * 10 + 4 10: ((8 - 6) * 10) + 4 11: 8 + (4 * (10 - 6)) 12: 8 + 4 *(10 - 6) 13: 8 - (4 * (6 - 10)) 14:

5*5-1÷5=24

7+5-6+4*8=38

(1) (-9)-(-13)+(-20)+(-2) (2) 3+13-(-7)/6 (3) (-2)-8-14-13 (4) (-7)*(-1)/7+8 (5) (-11)*4-(-18)/18 (6) 4+(-11)-1/(-3) (7) (-17)-6-16/(-18) (8) 5/7+(-1)-(-8) (9) (-1)*(-1)+15+1 (10) 3-(-5)*3/(-15) (11) 6*(-14)-(-14)+(-13) (12) (-15)*(-13)-(-17)-(-4) (13) (-20)/13/(-7)+

13+15+1-2-3=2413+15-(3-1)*2=2413*3-15*(2-1)=2413*3-15÷(2-1)=2413÷(1-2÷3)-15=24

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