Which of the following equations has a solution that is negative?





a. – 0.4x + 4 = – 1.6



b. – 0.4(x + 1.6) = 1.6



c. – 0.4(– x + 1.6) = 1.6



d. – 0.4x – 4 + 1.6x = – 1.6