You can put this solution on YOUR website! sol:
12/(m+6)
--------
9m/(2m+12)
12 (2m+12)
---- * ---------
(m+6) 9m
12 2(m+6)
--- * ---------
(m+6) 9m
here the canciling terms are m+6
12*2
-----
9m
canciling by 3 both numarator and denominator
4*2
----
3m
=8/3m