How to Duplicate URLs

Hello

I’m a new user and I want to access my articles using more than one URL, so I can post the same article twice or more in a social site (no, it’s not spam).

I Used to do that with Joomla, it was very simple. With Joomla, if i write “www.xxx.com/323” and “www.xxx.com/323-a” or “www.xxx.com/323-b” it will point to the same article (323) but the social sites see it as different URLs.

I have another way to do that, using Redirection Urls, but it’s a lot of work and i want something simple.

Is there any way to access the same article in WordPress using two different URLs?

Thank you