Question

2 * (x+3) < 3 - x
решения пожалуйста

Answer 1

$2*(x+3)\ \textless \ 3-x\\\\ 2*x+2*3\ \textless \ 3-x\\\\ 2x+6\ \textless \ 3-x\\\\ 2x+x\ \textless \ 3-6\\\\ 3x\ \textless \ -3\\\\ 3*x\ \textless \ 3*(-1)\\\\ x\ \textless \ -1\\\\ x\in(-\infty;\ -1)$