The answer to your question is 1/4. In getting the simplest form of a given fraction, you need to identify if the given numbers are reducible. Since you are given 6/24, find out if both numbers are divisible by any number. In this case, 6 and 24 are divisible by 6. Therefore, you get an answer of 1/4. To put it simply, here is a computation:
given: 6/24
6/6= 1
24/6=4
answer: 1/4
