1:(7 + 11) ÷ 9 × 12
2:((7 + 11) ÷ 9) × 12
3:(7 + 11) ÷ (9 ÷ 12)
4:(7 + 11) × 12 ÷ 9
5:((7 + 11) × 12) ÷ 9
6:(7 + 11) × (12 ÷ 9)
7:(11 + 7) ÷ 9 × 12
8:((11 + 7) ÷ 9) × 12
9:(11 + 7) ÷ (9 ÷ 12)
10:(11 - 7) × 9 - 12
11:((11 - 7) × 9) - 12
12:(11 + 7) × 12 ÷ 9
13:((11 + 7) × 12) ÷ 9
14:(11 + 7) × (12 ÷ 9)
15:(9 × (11 - 7)) - 12
16:9 × (11 - 7) - 12
17:(12 × (7 + 11)) ÷ 9
18:12 × (7 + 11) ÷ 9
19:12 × ((7 + 11) ÷ 9)
20:(12 × (11 + 7)) ÷ 9
21:12 × (11 + 7) ÷ 9
22:12 × ((11 + 7) ÷ 9)
23:12 ÷ 9 ×(7 + 11)
24:(12 ÷ 9) × (7 + 11)
25:12 ÷ (9 ÷ (7 + 11))
26:12 ÷ 9 ×(11 + 7)
27:(12 ÷ 9) × (11 + 7)
28:12 ÷ (9 ÷ (11 + 7))