I want to write some article on my website, should I just write these article on an HTML page or install blog on my host then write them on a blog page ? Which one is better in Seo wise? Some people say I should write those article on the blog, but I don't understand why it would make it different if I just write down on an HTML page and add it to my website. www.Example/article or www.example/blog1
Well a blog like wordpress makes your life a lot easier. You simply write your articles and Worpress deals with the rest. On top of that, Wordpress is well optimized SEO wise and you can use plugins like All-in-one SEO to ensure better SEO. Wordpress has tons of plugins to help you so you don't have to manually develop stuff. A blog is just the way to go if you want to write articles...
I think you should choose wordpress it is more easy to work and good in search engine eyes but I'm not saying html is bad it's also good all depends on your writing skills if you write good and unique article then it's works on both way doesn't mater it's wordpress or HTML
Well if you want to frequently update your site with article,it's better to make the site dynamic for your article in order to categorized the topic by installing wordpress in your site.
If you write it in HTML page, you need also a domain and hosting company so that your article will be published. If you write it in a free hosting blog, it needs only to post and you don't need anymore company to host your site.