Answer
$n \leq -\frac{7}{2}$
Work Step by Step
Subtract $3$ from each side of the inequality to isolate the constants on one side of the inequality:
$6n \leq -21$
Divide each side by $6$ to solve for $n$:
$n \leq -\frac{21}{6}$
Let's simplify the fraction by dividing the numerator and denominator by their greatest common factor, $3$:
$n \leq -\frac{7}{2}$