1:(9 + 13) ÷ 11 × 12
2:((9 + 13) ÷ 11) × 12
3:(9 + 13) ÷ (11 ÷ 12)
4:(9 + 13) × 12 ÷ 11
5:((9 + 13) × 12) ÷ 11
6:(9 + 13) × (12 ÷ 11)
7:(12 × (9 + 13)) ÷ 11
8:12 × (9 + 13) ÷ 11
9:12 × ((9 + 13) ÷ 11)
10:12 ÷ 11 ×(9 + 13)
11:(12 ÷ 11) × (9 + 13)
12:12 ÷ (11 ÷ (9 + 13))
13:12 ÷ 11 ×(13 + 9)
14:(12 ÷ 11) × (13 + 9)
15:12 ÷ (11 ÷ (13 + 9))
16:(12 × (13 + 9)) ÷ 11
17:12 × (13 + 9) ÷ 11
18:12 × ((13 + 9) ÷ 11)
19:(13 + 9) ÷ 11 × 12
20:((13 + 9) ÷ 11) × 12
21:(13 + 9) ÷ (11 ÷ 12)
22:(13 + 9) × 12 ÷ 11
23:((13 + 9) × 12) ÷ 11
24:(13 + 9) × (12 ÷ 11)