Answer: The number of books in Jason's collection = 21
The number of books in Nathan's collection = 24.
Step-by-step explanation:
Let the number of books Jason has be 'J'.
Let the number of books Nathan has be 'N'.
According to question, we have ,

Similarly, we have,

So, graphically, we get the values of J and N:
The number of books in Jason's collection = 21
The number of books in Nathan's collection = 24.