For starters, I am not going to give you the answer, but the way you should go about solving this problem.
Assuming you solve for m, notice that two terms have the same denominator. What would happen if you were to combine like terms. From there it is a simple problem of moving around parts of the fraction.
These kinds of problems can be tricky, but in a quiz or test setting, just take a second to look at the problem and see if you can find any terms you can combine or pull out common factors from.
Also, do not be dependent on using this site. Just sitting down and doing some problems helps a lot when it comes to the math and sciences