Question

упростите выражение x-4/x-2-x/2-x

Answer 1

$\frac{x - 4}{x - 2} - \frac{x}{2 - x} = \frac{x - 4}{x - 2} - \frac{x}{ - (x - 2)} = \frac{x - 4}{x - 2} + \frac{x}{x - 2} = \frac{x - 4 + x}{x - 2} = \frac{2x - 4}{x - 2} = \frac{2(x - 2)}{x - 2} = 2$