Rieš v \( \mathbb{R} \) rovnici:
\( \frac{2 x-1}{x+1}=-2 \)
\( K=\left\{-\frac{3}{4}\right\} \)
\( K=\left\{\frac{1}{2}\right\} \)
\( K=\left\{0\right\} \)
\( K=\left\{-\frac{1}{4}\right\} \)
