Point a is on the number axis. If you move a to the left by 8 length units and then to the right by 2 length units, then point a is the opposite number of the original point a

Point a is on the number axis. If you move a to the left by 8 length units and then to the right by 2 length units, then point a is the opposite number of the original point a

Let a denote the number X
x-8+2=-x
x-6=-x
x+x=6
x=3
The point a = 3