作业帮2.2.5.9怎么算24
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2.2.5.9怎么算24
2.2.5.9怎么算24
2.2.5.9怎么算24
1:2 × (5 - 2 + 9)
2:2 × ((5 - 2) + 9)
3:2 × (5 - (2 - 9))
4:2 × (5 + 9 - 2)
5:2 × ((5 + 9) - 2)
6:2 × (5 + (9 - 2))
7:2 × (9 - 2 + 5)
8:2 × ((9 - 2) + 5)
9:2 × (9 - (2 - 5))
10:2 × (9 + 5 - 2)
11:2 × ((9 + 5) - 2)
12:2 × (9 + (5 - 2))
13:(5 - 2 + 9) × 2
14:((5 - 2) + 9) × 2
15:(5 - (2 - 9)) × 2
16:(5 + 9 - 2) × 2
17:((5 + 9) - 2) × 2
18:(5 + (9 - 2)) × 2
19:(9 - 2 + 5) × 2
20:((9 - 2) + 5) × 2
21:(9 - (2 - 5)) × 2
22:(9 + 5 - 2) × 2
23:((9 + 5) - 2) × 2
24:(9 + (5 - 2)) × 2
回答完毕,