Answer:
200-100=5(x)
Step-by-step explanation:
If the total cost is 200 dollars and we spent 100 on the fee, we have 100 dolars for deliveries.
If each delivery is 5 dollars, then the amount of money spent on deliveries is x(unknown) dollars then we have 200 - 100 = 5 x <--unknown
total money^ ^fee ^each deliv