To find the cost \( C \) of each bag of lemons, you can divide the total cost by the number of bags. In this case, the equation can be structured as follows:
\[ C = \frac{19.75}{5} \]
This means the cost \( C \) of each bag of lemons is equal to the total cost ($19.75) divided by the number of bags (5).
So you can complete the equation as:
C = 19.75 / 5