Answer
$n\gt-\dfrac{17}{2}$
Work Step by Step
Using the Distributive Property and the properties of inequalities, the solution to the given inequality, $
5(n+1)-3(n-1)\gt-9
,$ is
\begin{array}{l}\require{cancel}
5n+5-3n+3\gt-9
\\\\
5n-3n\gt-9-5-3
\\\\
2n\gt-17
\\\\
n\gt-\dfrac{17}{2}
.\end{array}