1:(9 + 9 - 6) × 2
2:((9 + 9) - 6) × 2
3:(9 + (9 - 6)) × 2
4:(9 - 6 + 9) × 2
5:((9 - 6) + 9) × 2
6:(9 - (6 - 9)) × 2
7:9 × (6 ÷ 9 + 2)
8:9 × ((6 ÷ 9) + 2)
9:9 × (2 + 6 ÷ 9)
10:9 × (2 + (6 ÷ 9))
11:(6 ÷ 9 + 2) × 9
12:((6 ÷ 9) + 2) × 9
13:2 × (9 + 9 - 6)
14:2 × ((9 + 9) - 6)
15:2 × (9 + (9 - 6))
16:2 × (9 - 6 + 9)
17:2 × ((9 - 6) + 9)
18:2 × (9 - (6 - 9))
19:(2 + 6 ÷ 9) × 9
20:(2 + (6 ÷ 9)) × 9