[tex] \frac{x(x + 7) + 3(x - 6)}{(x - 6)(x + 7)} \\ \frac{x {}^{2} + 7x + 3x - 18 }{(x - 6)(x + 7)} \\ \frac{x { }^{2} + 10x - 18}{(x - 6)(x + 7)} [/tex]
