How do you translate “the difference of 7 and a number n” into a mathematical expression?

Hint: The translation of the expression “the difference of 7 and a number n” into a mathematical expression is as follows: the word “difference” in the sentence means the subtraction so using this difference meaning in the given sentence the mathematical translation of the sentence is the subtraction of 7 and n.

Complete step by step answer:
The sentence given in the above problem of which we have to write the mathematical translation is as follows:
“the difference of 7 and a number n”
The word “difference” in the above sentence means the subtraction so using this subtraction to write the mathematical expression is:
Subtracting 7 and the number “n” is equal to:
$7-n$

Hence, the mathematical translation of “the difference of 7 and a number n” is equal to:
$7-n$

Note: Whenever you find the word “difference” in any mathematics problems this means that we have to subtract any two numbers so in the above problem we have taken the subtraction of 7 and the number n. Also, in this sentence, the number “n” is unknown so you will find such sentences in word problems where you have to find some unknown. For that, you have to equate this sentence with some number to get the value of “n”.