Question:7 × (12 + 9 ) ÷ 3 - 9 = ?A20B30C40D50Answer: C. 40Explanation:7 × (12 + 9 ) ÷ 3 - 9 = 7 × 21 ÷ 3 - 9 = 7 × 7 - 9 = 49 - 9 = 40
