# How do you solve -1/6n<=-18?

$n \le 108$
Multiply each side by the reciprocal which is $\left(- \frac{6}{1}\right)$ to get $n$ by itself
Now on the RH side, you are left with $n \le - 18 \left(- \frac{6}{1}\right)$
$n \le 108$