Answer
2/3
-1/3
Steps:
We have find two numbers that are located at a distance of 1/2 unit from 1/6 on the number line.
For this, we need to add and subtract 1/2 to and from 1/6
1/6 + 1/2 = 2/3
1/6 - 1/2 = -1/3
((Credit to another user, I looked this up to make sure I was correct.))