To help you formulate the subtraction equation, we can structure the problem as follows:
Let \( F \) be the total hours Rebecca spent on her phone from Friday to Sunday, and \( M \) be the total hours Rebecca spent from Monday to Thursday.
The equation representing how many more hours she spent on her phone Friday through Sunday than Monday through Thursday would be:
\[ F - M = \text{Hours more spent on phone from Friday through Sunday} \]
You can fill in the values for \( F \) and \( M \) based on how many hours she actually spent on her phone during those days.
Please provide the actual hours if you want to calculate the specific numbers or if you need further assistance!