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

1 Answer
Dec 3, 2016

Answer:

#(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)#