Answer:
Step-by-step explanation:
(Divide all sides by 3 to make it easier to understand)
Now you can just look at all of the possible values for n, knowing that it's an integer.
is less than
, so we know that
's lowest value must be
.
We also know that is less than or equal to
, so the highest value of
must be
.
Now you can count through the remaining integers from to
.