[tex] \frac{x}{ \times - 1} - \frac{x - 1}{x - 1} - \frac{1}{x(x - 1)} = [/tex]
[tex] = \frac{x - x + 1}{x - 1} - \frac{1}{x(x - 1)} = [/tex]
[tex] = \frac{1}{x - 1} - \frac{1}{x(x - 1)} = [/tex]
[tex] = \frac{x}{x(x - 1)} - \frac{1}{x(x - 1)} = [/tex]
[tex] = \frac{x - 1}{x(x - 1)} = [/tex]
[tex] = \frac{1}{x} [/tex]
