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