3/10
The fraction five-fifteenths written in the lowest terms is one-third.
5/8
8/15 is the lowest terms.
2/15
4/15 is a fraction, already in its lowest terms
15/24 = 5/8 in its lowest terms
You would find the factors of each and cancel any they have in common. But 15 and sixteen do not have common factors, therefore 15 over 16 is already in lowest terms.
It's already in its lowest terms
15% = 3/20 in its lowest terms
It is already reduced to its lowest terms.
15 over 30 reduced to lowest terms is 1/2
4 out of 30 reduced to the lowest terms is 2 out of 15 or 2/15