1:(9 - 1) × 6 ÷ 2
2:((9 - 1) × 6) ÷ 2
3:(9 - 1) × (6 ÷ 2)
4:(9 - 1) ÷ 2 × 6
5:((9 - 1) ÷ 2) × 6
6:(9 - 1) ÷ (2 ÷ 6)
7:9 × 1 × 2 + 6
8:(9 × 1) × 2 + 6
9:(9 × 1 × 2) + 6
10:((9 × 1) × 2) + 6
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