Which of the following equations has a solution of −8?

Answer 1

To determine which equation has a solution of -8, we can substitute -8 for the variable in each equation and see which equation is true.
a) -2x = 16
If we substitute -8 for x, we get -2(-8) = 16, which simplifies to 16 = 16. This equation is true when x = -8.

b) -5x + 9 = -41
If we substitute -8 for x, we get -5(-8) + 9 = -41, which simplifies to 40 + 9 = -41. This equation is not true when x = -8.

c) 4x + 12 = -28
If we substitute -8 for x, we get 4(-8) + 12 = -28, which simplifies to -32 + 12 = -28. This equation is not true when x = -8.

d) 3x - 6 = -38
If we substitute -8 for x, we get 3(-8) - 6 = -38, which simplifies to -24 - 6 = -38. This equation is not true when x = -8.

Therefore, the equation that has a solution of -8 is a) -2x = 16.