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
You would take 9x3 and get 27 and then add that to 21 which is 48 and then divide 48 by 3 and get 16 so 16in each case
Answer:
4/5p - 8
Step-by-step explanation: