To simplify this you need to know the common multiples of both numbers.
54 : 24
So, first we can see that both numbers can be divided by 2. So:
54 : 24
54/2 : 24/2
27 : 12
Now (if you know your multiplication tables
) you can see that both numbers can be divided by 3. So:
27 : 12
27/3 : 12/3
9 : 4
Now, since 9 and 4 have no other common multiples, this is the answer fully simplified. 