Ok to reduce fractions you have the find the Greatest Common Factor of both the denominator and nominator and factor it out. In this case the GCF for 15 and 25 is 5 so you would divide 15 and 25 by 5 to get 3/5
we are asked to express the fraction 15/25 to simplest form. To simplify the fraction, we will get the greatest common factor of the two numbers. In this case, the GCF is equal to 5. So we divide both numbers by 5, that is equal to 3/5. answer is C
