The answer is 6/7
18/21 in simplest form is 6/7.
21/18 simplified would be 7/6
18 over 21
21/80 is already in its simplest form
Yes, to 6/7
21/18 = 7/6
21/5 is the simplest form.
18/42 = 9/21 = 3/7
440/21 is in its simplest form.
21/10 is in its simplest form.
10/21 is in its simplest form.
4/21 is in its simplest form.