I believe that the number itself is already in it's simplest form, 10 4/5. This is because you can not divide 10 4/5 by any number for it to be more reduced. Otherwise, the only way I could think of it the number written as a improper fraction which can be written as this: 54/5.
Also, may I be marked brainliest please? I need them to rank up :( Thank you for understanding