42/55 is already simplified.
42/55
42/55 is in its simplest form
385/42 = 55/6 = 91/6 or 9.1667
28/55 is in its simplest form.
38/55 is in its simplest form.
55/64 is in its simplest form.
36/55 is in its simplest form.
54/55 is in its simplest form.
55/7 is in its simplest form.
42 and 55 have no common factor ((2 x 3 x 7) and (5 x 11)) so 42/55 is the simplest form.
56/55 is already in its simplest form
55/12 is already in its simplest form