What is 2/3 - 1/2?

The first step is to find a common denominator, which is 6 in this case:

2/3 = 4/6

1/2 = 3/6

Subtracting the fractions:

4/6 - 3/6 = 1/6

Therefore, 2/3 - 1/2 = 1/6.