Find a general solution of the differential equation.
[tex](x+y)y' = x-y[/tex]
The Attempt at a Solution
So if I plug this back into the original equation;
[tex] v(v'-1)= x-y [/tex]
How do I convert [tex]v=x+y[/tex] into [tex]x-y[/tex] so that I have only v's and x's? Do I have to make another substitution with x-y?