7,9,9,7如何算24?
1个回答

1:(9 + 9 × 7) ÷ 3

2:(9 + (9 × 7)) ÷ 3

3:(9 ÷ 9 + 7) × 3

4:((9 ÷ 9) + 7) × 3

5:(9 + 3) × (9 - 7)

6:(9 + 7 × 9) ÷ 3

7:(9 + (7 × 9)) ÷ 3

8:(9 - 7) × (9 + 3)

9:(9 × 7 + 9) ÷ 3

10:((9 × 7) + 9) ÷ 3

11:(9 - 7) × (3 + 9)

12:(3 + 9) × (9 - 7)

13:3 × (9 ÷ 9 + 7)

14:3 × ((9 ÷ 9) + 7)

15:3 × (7 + 9 ÷ 9)

16:3 × (7 + (9 ÷ 9))

17:(7 + 9 ÷ 9) × 3

18:(7 + (9 ÷ 9)) × 3

19:(7 × 9 + 9) ÷ 3

20:((7 × 9) + 9) ÷ 3