Răspuns:
[tex] \frac{2x}{2x} + \frac{1 - x}{2x - 1} = 1 + \frac{1 - x}{2x - 1} = \frac{2x - 1 + 1 - x}{2x - 1} = \frac{2x - x}{2x - 1} = \frac{x}{2x - 1} [/tex]
