Rational expression. simplify

36m-48m over 6m.

One way is to find common factors

example

8/6=4/3 because 8/6, 8 and 6 have common factor of 2 so divide that out to get 4/3

basically divide the LCM from each

so factor

we can combine 36m-48m into - 12m

we have

-12m/6m

common factor is 6m

-12m/6m = (-2) / 1 times (6m) / (6m) = - 2 times 1=-2

answer is - 2