Answer:
6 and 2/3
Explanation:
First, get the unit rate by finding two corresponding sides that both have numbers (BT and PJ) then dividing 8 by 6 (length of the sides and we need to get what times 6=8 so we can find the length of the other sides), so 4/3.
Then, multiply the side corresponding to JN, which is TL, by 4/3 (unit rate), and get 20/3 or 6 and 2/3.
(hope this helps :P)