Question

решите неравенство 2х+3>1-х

Answer 1

$2x+3\ \textgreater \ 1-x \\ 2x+x\ \textgreater \ 1-3 \\ 3x\ \textgreater \ -2 \\ x\ \textgreater \ - \frac{2}{3} \\ \\ x\in (- \frac{2}{3} ;+ \infty} )$