You can factor a 12 out from both. 12 goes into 12m 12 times and 12 goes into 60 5 times. So you would pull it out front:
12(m+5)
That's as far as you can take it. Do you have to set it equal to 0, or some other number??
That's what I got I think it's correct
False, all rational functions have to contain a rational expression, or nothing would even be solvable.
Hopefully this helps!