I NEED HELP PLEASE!!!

Answer:
24 km 600 m
Step-by-step explanation:
Subtract:
73 km 200 m - 48 km 600 m
We must borrow 1 km, or 1000 m, from 73 km 200 m:
73 km 200 m => 72 km 1200 m
Now we can subtract 48 km 600 m from 72 km 1200 m:
72 km 1200 m
-48 km 600 m
------------------------
24 km 600 m