Final answer:
The algebraic expression for 7 minus f is '7 - f'. This indicates the subtraction of the variable f from the number 7. If the value of f is known, it can be substituted in to find the numerical result.
Step-by-step explanation:
The algebraic expression for 7 minus f is written as 7 - f. In algebra, letters like f represent variables which can stand for any number, and the expression simply denotes the subtraction of the value of f from 7. If you know the value of f, you can substitute it into the expression to find the result. For example, if f equals 3, then 7 - f would be 7 - 3, which equals 4.