The given inequality is
[tex]4x+9>63[/tex]First, we subtract 9 from each side
[tex]\begin{gathered} 4x+9-9>63-9 \\ 4x>54 \end{gathered}[/tex]Then, we divide the inequality by 4
[tex]\begin{gathered} \frac{4x}{4}>\frac{54}{4} \\ x>13.5 \end{gathered}[/tex]So, 13 is not a solution because is less than 13.56.
