No.
1 is 37 over 37 simplified.
no
15/37 is already as simple as it can get, and can't be simplified any further.
12 over 37.
No, but it can be written as a mixed fraction: 37/10
37/56 is already in its simplest form
37/3
37/50
3/7 is simplified.
37/45 cannot be simplified further.
1 and 37/1000 = 1037/1000 and there are no common factors for 1037 and 1000, so 1 and 37/1000 cannot be simplified
37/50