Answer:
The difference of a number and seven ⇒ n - 7
The product of seven and a number ⇒ 7n
The quotient of a number and seven ⇒ n/7
The sum of seven and a number ⇒ n + 7
Explanation:
Difference ⇒ subtraction.
Product ⇒ multiplication.
Quotient ⇒ division.
Sum ⇒ addition.