Rieš v \( \R \) rovnicu:
\( \normalsize2x+30=4 \)
\( \normalsize K=\left\{{-13}\right\} \)
\( \normalsize K=\left\{{-12}\right\} \)
\( \normalsize K=\left\{{-10}\right\} \)
\( \normalsize K=\left\{{-15}\right\} \)
