Given:
Jessica owns 2 fewer books than Paul.
This statement means that the number of books Jessica owns is 2 less than the number of books Paul owns. It also mean the number of books Paul owns is 2 more than that of Jessica.
Let P represent the number of Paul's book.
To find the expression that can be used to find the number of books that Jessica owns, subtract 2 from the number of books Paul owns.
Thus, we have:
Number of books Jessica owns = P - 2
Therefore, the expression that can be used to find the number of books that Jessica owns is ==> P - 2
ANSWER:
P - 2