21/28 = 3/4
it is 1,3,7,21=21 28=1,2,4,7,21
3/4
2/21
3/4
4/3
Expressed as a vulgar fraction in its simplest form, by dividing both sides of the fraction by 7, 21/28 is equal to 3/4, or three quarters.
21:14 21/7:14/7 3:2
28/55 is in its simplest form.
21/5 is the simplest form.
Simplest would imply the one that is the most simple, so there is only 1 simplest form.21 = 3 * 7 ; 28 = 4 * 73 * 7------- = 3/44 * 7
21/80 is already in its simplest form
1/21/2