The expression could be written as: <em> 3L-5.</em>
Step-by-step explanation:
We are asked to find an variable equation/ expresssion for the following world problem:
" Five less than three times the length L".
for this we have to firstly take '3' times the length 'L' (i.e. 3L) and then subtract that expression by 5 to make it five less than three times the length 'L' and hence obtain our required expression.