Theory:

In the independence day celebration, all the students in a college clothed white dress uniformly and celebrated the independence day of our nation. Here all the students are different but their costumes are the same.
 
We can apply the above scenario to the concept of Like fraction. In a fraction, if the numerator is different but its denominator is the same that is known as, Like fraction.
Like fractions are fractions, with the same denominator.
Example:
18,28,38
 
Here the denominator of all the fractions are the same, so it is a Like fraction.