3/5
You cannot because the question is missing a number between 6 and 35ths.
3/7
3/5
15/35 divide both by 5 = 3/7
If you take it to thirty-fifths, you have 21 35ths and 25 35ths. halfway is 23 35ths.
21/5 is the simplest form.
21/80 is already in its simplest form
21/100 is the simplest form.
21/4 is in its simplest form.
62/21 is in its simplest form.
8/21 is the simplest form.
13/21 is in its simplest form.