1: 6 × (8 ÷ (9 - 7))2: 6 × 8 ÷(9 - 7)3: (6 × 8) ÷ (9 - 7)4: (6 ÷ (9 - 7)) × 85: 6 ÷ (9 - 7) × 86: 6 ÷ ((9 - 7) ÷ 8)7: 8 × (6 ÷ (9 - 7))8: 8 × 6 ÷(9 - 7)