| 2 - 5x | <= 0

the absolute value is always positive. Therefore, it is never less than zero. It can, however, be equal to zero:

2 - 5x = 0

x = 2/5

| 2 - 5x | <= 0

the absolute value is always positive. Therefore, it is never less than zero. It can, however, be equal to zero:

2 - 5x = 0

x = 2/5