To find the difference between two numbers you would subtract them.
You are told the first number is 7 and you want to find the different of 7 and a number, which is represented by the letter n.
To find the difference you would subtract n from 7, which would be written as 7 - n
The correct answer would be 2. 7 - n ( 7 minus n)
Answer: 7 - n (Look at the explanation to understand it clearly)
Normally you'll subtract this equation, but since there isn't a number but is a variable, you would have to rewrite it.
In this problem, we would represent n as the variable and 7 as the number. Rewrite it like this:
7 - n
Or you could say it like this:
A number decreased by 7.
"A number" would represent the variable.
Hence, your answer is 7 - n.
