Yes, you can post the same thing on different websites. It depends actually what you want. If you're going to drive traffic to your main website, then definitely yes, you can. But first, post it on your main website.
Like if you want to rank Leofinance, post it on Leofinance at first. And then post it on Hive blog and make sure you add a canonical tag that tells Google which content is the original content.

So the point is, focus on one website. Google isn't likely going to rank the same content from 2 different websites. It's going to pick the original one.