Question

Jillian wanted to determine the difference of 7 and a number, n. She wrote in a table several possible expressions she could use to represent this. Which is the correct expression number?

Answer 1

`7-n`

Explanation:

Let

n------> a number

we know that

The expression " the difference of
`7` and a number n" is equivalent to say " Subtract a number n from 7"

therefore

the algebraic expression is equal to

`7-n`