Respuesta :

[tex]\begin{gathered} 1+5x<-9 \\ \text{Subtract 1 from both sides} \\ 1+5x-1<-9-1 \\ 5x<-10 \end{gathered}[/tex]

Dividing both sides by 5, we have

[tex]\begin{gathered} \frac{5x}{5}<\frac{-10}{5} \\ x<-2 \end{gathered}[/tex]