For this case we have the following fractions:
22/33 42/81 13/25 18/27
Fraction 1: You can divide the numerator and denominator by 11

Fraction 2: The numerator and denominator can be divided by 3

Fraction 3: The numerator and denominator can not be divided by the same number.

Fraction 4: The numerator and denominator can be divided by 9

Answer:
A fraction that is written in its simplest form is
Fraction 3:
