用加减乘除( )运算,使结果为24(按顺序做) 9 7 5 4
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用加减乘除( )运算,使结果为24(按顺序做) 9 7 5 4
用加减乘除( )运算,使结果为24(按顺序做) 9 7 5 4
用加减乘除( )运算,使结果为24(按顺序做) 9 7 5 4
9×4-(7+5)=24
9+(7-4)×5=244×9-7-5=24
1: 9 + (7 - 4) × 5=24
2: 9 + ((7 - 4) × 5)=24
3: 9 + (5 × (7 - 4))=24
4: 9 + 5 ×(7 - 4)=24
5: (9 - 5) × 7 - 4=24
6: ((9 - 5) × 7) - 4=24
7: 9 - (5 × (4 - 7))=24
8: ...
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1: 9 + (7 - 4) × 5=24
2: 9 + ((7 - 4) × 5)=24
3: 9 + (5 × (7 - 4))=24
4: 9 + 5 ×(7 - 4)=24
5: (9 - 5) × 7 - 4=24
6: ((9 - 5) × 7) - 4=24
7: 9 - (5 × (4 - 7))=24
8: 9 - 5 ×(4 - 7)=24
9: 9 - (4 - 7) × 5=24
10: 9 - ((4 - 7) × 5)=24
11: 9 × 4 -(7 + 5)=24
12: (9 × 4) - (7 + 5)=24
13: 9 × 4 - 7 - 5=24
14: (9 × 4) - 7 - 5=24
15: (9 × 4 - 7) - 5=24
16: ((9 × 4) - 7) - 5=24
17: 9 × 4 -(5 + 7)=24
18: (9 × 4) - (5 + 7)=24
19: 9 × 4 - 5 - 7=24
20: (9 × 4) - 5 - 7=24
21: (9 × 4 - 5) - 7=24
22: ((9 × 4) - 5) - 7=24
23: (7 × (9 - 5)) - 4=24
24: 7 × (9 - 5) - 4=24
25: 7 × 4 - 9 + 5=24
26: (7 × 4) - 9 + 5=24
27: (7 × 4 - 9) + 5=24
28: ((7 × 4) - 9) + 5=24
29: 7 × 4 -(9 - 5)=24
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