Answer:
the number will be represented by n. but in the answer you get 2n.
The answer in an equality form is
[tex]2n - 18[/tex]
Step by step explanation:
[tex]n + 2 + n - 20[/tex]
[tex]you \: then \: group \: like \: terms[/tex]
[tex]n + n + 2 - 20[/tex]
[tex]2n + 2 - 20[/tex]
[tex]2n - 18[/tex]
