Question

If n represents a number, how do you write an expression for one-half of three less than the number?

Answer 1

`(n - 3)/2` or `(n/2 - 3/2)`

Explanation:

First, let's write "three less than the number". "less than the number" means to subtract from the number. So we can write:

`n - 3`.

Now we need to take one-half of this. This means to multiple by `1/2`. Taking what we previously wrote and multiplying by `1/2` gives:

`(1/2)*(n - 3) -> (n - 3)/2` or `(n/2 - 3/2)`