Place parentheses, if needed, to make each of the following equations true. c. 5+4+9+2=9 d. 5+6+2+2=10 a. 7+4-2=22 b. 8+2+1=5 a. Choose the correct answer below. A. Parentheses are needed. The corrected equation is 7+ (4.2) = 22. O B. Parentheses are needed. The corrected equation is (7+4+2) = 22. O C. Parentheses are needed. The corrected equation is (7+4)*2= 22. O D. Parentheses are not needed to make the equation true. b. Choose the correct answer below. A. Parentheses are needed. The corrected equation is (8+2)+1=5. O B. Parentheses are needed. The corrected equation is (8+2+1) = 5. Parentheses are needed. The corrected equation is 8+(2+1) = 5. O C. O D. Parentheses are not needed to make the equation true. c. Choose the correct answer below. O A. Parentheses are needed. The corrected equation is (5+4+9) +2=9. O B. Parentheses are needed. The corrected equation is (5+4)+(9+2) = 9. OC. Parentheses are needed. The corrected equation is 5+ (4 +9) +2=9. O D. Parentheses are not needed to make the equation true. d. Choose the correct answer below. O A. Parentheses are needed. The corrected equation is (5+6) +2+2=10. O B. Parentheses are needed. The corrected equation is (5+6) +(2+2) = 10. OC. Parentheses are needed. The corrected equation is 5+6+(2+2) = 10. O D. Parentheses are not needed to make the equation true.