Finding simplest form of fraction is just like reducing the fraction. Fractions can be simplified when both the numerator and denominator have common factor.
Below you could see steps:

Step 1: Find the prime factorization of both numerator and denominator.

Step 2: Write the fraction as the product of their prime factors.

Step 3: Eliminate any common prime factors.

Step 4: Multiply remaining factors in the numerator and denominator.