Question

2× +5<-3 +40 resposta

Answer 1

$2x+\ \textless \ -3+40\to \\\\ 2x\ \textless \ -3+40-5\to \\\\ 2x\ \textless \ 32\to \\\\ x\ \textless \ \frac{32}{2} \to \\\\ x\ \textless \ 16\\\\\\ S=\{xER|~x\ \textless \ 16\}$