Simplest form of fraction means that the hcf (highest common factor) of numerator and denominator is 1;

Steps of writing fraction in its, simplest form:

1. Find gcf(greatest common factor) of numerator and denominator:

gcf(45, 108)= 9

2. Divide numerator and denominator by their gcf:

New Numerator= Numerator/ gcf

=> New numerator= 45/9=5

New Denominator= Denominator/gcf

New Denominator=108/9=12

3. Write the fraction in simplest form:

Simplest form= New Numerator/ New Denominator

Therefore, Simplest form= 5/12

The answer is 5/12