No, they are not.
15 of 55 as a fraction = 15/55 or 3/11
equivalent fraction of 44/55 = 88/110
55 percent as a fraction = 11/20
equivalent fraction of 212 = 212/1
Assuming you mean 11/15... 11/15=22/30=33/45=44/60=55/75
51/2 as an improper fraction is 55/10 or 11/2
11/20
0.55 = 55/100 which simplifies to 11/20
theres only one equivalent fraction and that's 33/55 = 3/5
6/11
15/55 in simplest form is 3/11.
5.5 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 55/10. You can simplify this rational fraction if you require.