1. The problem statement, all variables and given/known data 5dx - Exp[y-x]dy = 0 2. Relevant equations partial of M with respect to y equals partial of N with respect to x. 3. The attempt at a solution So, I multiplied the equation by Exp[x] and voila that solved it for me by making it an exact D.E. and from there finding the solution was trivial... I was really just trying to make it prettier to look at. I've tried using the method where you try to find a mu that is equal to Exp[(dN/dx-dM/dy)/M] but that didn't pan out as I was left with an integral dependent on x and y. I have no idea how to deal with that. If someone could give me a nudge I'd greatly appreciate it!