|5 | = | 5-0 |, his meaning on the number axis is to express the distance between the point 5 and the origin, then | a + 6 | =?

|5 | = | 5-0 |, his meaning on the number axis is to express the distance between the point 5 and the origin, then | a + 6 | =?

|A + 6 | is the distance from a to - 6