21/28 = 3/4
15/28 is the simplest form and, by definition, the simplest form must be equivalent to other forms of the ratio.
3/4
7/3
112/300 reduces to 56/150 when both terms are halved. Halving again gives 28/75. This is the simplest form. Expressed as a ratio, 28:75.
4/3
21:14 21/7:14/7 3:2
it is 1,3,7,21=21 28=1,2,4,7,21
21/28 = 3/4
15/28 is the simplest form and, by definition, the simplest form must be equivalent to other forms of the ratio.
2/21
3/4
3/4
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.
28/55 is in its simplest form.
7/3
112/300 reduces to 56/150 when both terms are halved. Halving again gives 28/75. This is the simplest form. Expressed as a ratio, 28:75.