Question

-5x>_(maior ou igual que)-15

Answer 1

$-5x~\ge~-15\\\\\\Multiplicando~a~inequacao~por~(-1)\\\\\\5x~\le~15\\\\\\Note~que~o~sinal~de~desigualdade~\acute{e}~invertido\\\\\\x~\le~\frac{15}{5}\\\\\\\boxed{x~\le~3}$

$Resposta:~~x\le3~~~ou~~~x\in~]-\infty\,,\,3]$