p = \(\frac{1}{2}; \frac{1}{p - 1} = \frac{2}{p + x}\) \(\frac{1}{\frac{1}{2} - 1} = \frac{2}{\frac{1}{2} + x}\) \(\frac{1}{\frac{1 - 2}{2}} = \frac{2}{\frac{1 + 2x}{2}}\) \(\frac{1}{-\frac{1}{2}} = \frac{2}{\frac{1 + 2x}{2}}\) -2 = \(\frac{4}{1 + 2x} -2(1 + 2x) = 4\) 1 + 2x = \(\frac{4}{-2}\) 1 + 2x = -2 2x = -2 - 1 2x = -3 x = -\(\frac{3}{2}\) x = -1\(\frac{1}{2}\)