To find the fractions simplest form, we first need to solve for the GCF of the two numbers, 28 & 36. We do this by finding the prime factors.
28=722
36=3322
The numbers have the prime factors of 22 in common, therefore the GCF is 4. (2*2=4)
28/4=7 36/4=9
\(\frac{28}{36} divided by 4= \frac{7}{9}\)
Answer=7/9