作业帮用2,6,7,8通过加减乘除,最后算成的得数是24,怎样算的
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用2,6,7,8通过加减乘除,最后算成的得数是24,怎样算的
用2,6,7,8通过加减乘除,最后算成的得数是24,怎样算的
用2,6,7,8通过加减乘除,最后算成的得数是24,怎样算的
这个有很多啊,
1: (2 - 6 + 7) × 8
2: ((2 - 6) + 7) × 8
3: (2 - (6 - 7)) × 8
4: (2 + 7 - 6) × 8
5: ((2 + 7) - 6) × 8
6: (2 + (7 - 6)) × 8
7: (2 × (7 + 8)) - 6
8: 2 × (7 + 8) - 6
9: (2 × (8 + 7)) - 6
10: 2 × (8 + 7) - 6
11: (7 + 2 - 6) × 8
12: ((7 + 2) - 6) × 8
13: (7 + (2 - 6)) × 8
14: (7 - 6 + 2) × 8
15: ((7 - 6) + 2) × 8
16: (7 - (6 - 2)) × 8
17: (7 + 8) × 2 - 6
18: ((7 + 8) × 2) - 6
19: 8 × (2 - 6 + 7)
20: 8 × ((2 - 6) + 7)
21: 8 × (2 - (6 - 7))
22: 8 × (2 + 7 - 6)
23: 8 × ((2 + 7) - 6)
24: 8 × (2 + (7 - 6))
25: (8 + 7) × 2 - 6
26: ((8 + 7) × 2) - 6
27: 8 × (7 + 2 - 6)
28: 8 × ((7 + 2) - 6)
29: 8 × (7 + (2 - 6))
30: 8 × (7 - 6 + 2)
31: 8 × ((7 - 6) + 2)
32: 8 × (7 - (6 - 2))
（7+2-6）*8=24
（7+8）*2-6=24
貌似我就会这两个。。
(2+7-6)*8
（7-6+2）*8
（7+2-6）*8=24
(2 - 6 + 7) × 8=24