帮我把4,6,7,9 2.4.7.7 3.3.8.8 1.4.5.6 的二十四点算出
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4,6,7,9

6 ÷ 4 ×(7 + 9)

(6 ÷ 4) × (7 + 9)

6 ÷ (4 ÷ (7 + 9))

(6 × (7 + 9)) ÷ 4

6 × ((9 + 7) ÷ 4)

(7 + 9) ÷ 4 × 6

((7 + 9) ÷ 4) × 6

(7 + 9) ÷ (4 ÷ 6)

(7 + 9) × 6 ÷ 4

((7 + 9) × 6) ÷ 4

(7 + 9) × (6 ÷ 4)

(9 + 7) ÷ 4 × 6

((9 + 7) ÷ 4) × 6

(9 + 7) ÷ (4 ÷ 6)

((9 + 7) × 6) ÷ 4

(9 + 7) × (6 ÷ 4)

2.4.7.7

(7 + 7) × 2 - 4

3.3.8.8

8 ÷ (3 - 8 ÷ 3)

1 4 5 6

4 ÷ (1 - 5 ÷ 6)

6 ÷ (5 ÷ 4 - 1)

6 ÷ ((5 ÷ 4) - 1)