catherine4872 catherine4872 Today at 9:22 AM Mathematics Answered 16. Insert parentheses where needed in each expression to show how to get each result. a. 2 + -3 X 4 = -10 b. 4 + -3 X -4 = -4 c. -12 + 2 + - 4 = 6 d. 8 = -2 + -2 = -6