515 is an integer and so there is not really a sensible way of writing it as a fraction or mixed number.
515 is an integer and not a fraction. However, it can be expressed in rational form as 515/1 which cannot be simplified.
515 in an integer, not a fraction!
5.15 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. And, being a decimal, there is no simpler form. Its rational equivalent is 515/100 which can be simplified to 5 3/20.
5/15 = 1/3
0.05 as a fraction simplified is 1/20
0.76 = 19/25 as a fraction simplified
6.6 as a simplified fraction is 33/5
6.15 is a fraction. It is a fraction in decimal form but that does not stop it being a fraction. And, as a decimal fraction, it cannot be simplified. Its rational equivalent is 615/100 which can be simplified to 123/20.
11/26 is the simplified fraction
515/1 is one possible answer.
0.7 as a non-simplified fraction = 7/10
12 and a half as a simplified fraction is 25/2