3 4 5 6 怎么算24

算24点网址：
http://www.dffy.com/tool/24.htm

1: (3 - 4 + 5) × 6
2: ((3 - 4) + 5) × 6
3: (3 - (4 - 5)) × 6
4: (3 + 5 - 4) × 6
5: ((3 + 5) - 4) × 6
6: (3 + (5 - 4)) × 6
7: (5 + 3 - 4) × 6
8: ((5 + 3) - 4) × 6
9: (5 + (3 - 4)) × 6
10: (5 - 4 + 3) × 6
11: ((5 - 4) + 3) × 6
12: (5 - (4 - 3)) × 6
13: 6 × (3 - 4 + 5)
14: 6 × ((3 - 4) + 5)
15: 6 × (3 - (4 - 5))
16: 6 × (3 + 5 - 4)