A fraction, by definition, has the following form:
Where "a" is the numerator and "b" is the denominator. Both are Integers.
In this case you have the following fraction given in the exercise:
You can identify that the given fraction can be simplified by dividing the numerator and the denominator by 2. Then:
Since the numetaror and the denominator cannot be divided by the same number, you can determine that the answer is:
