\[\frac{4x - 3y^{\backslash 2x - 5y}}{6x + 3y} + \frac{2x - y^{\backslash 6x + 3y}}{2x - 5y} =\]
\[= \frac{20x^{2} - 26xy + 12y^{2}}{12x^{2} + 6xy - 30xy - 15y^{2}} =\]
\[= \frac{20x^{2} - 26xy + 12y^{2}}{12x^{2} - 24xy - 15y^{2}}.\]