5/18 is in its simplest form.
7/18 is in its simplest form.
1 - 9
9/18ths
8/18ths=4/9ths
9/18 = 1/2
2 1 9ths
90/18 = 5
The simplest form of 5 and 5 is 10:
21/5 is the simplest form.
4/5 is in its simplest form.
That is its simplest form.
5/6 is the simplest form.