How do I install adobe flashplayer in ubuntu 16.04? [duplicate]

I was wondering how I can install the adobe flashplayer from this site: https://get.adobe.com/flashplayer/

I have no experience with the formats that are available there.

There is no .deb version of it there and I need the flashplayer for Opera.

Thanks

You won't be able to install it from that site. I believe Opera has pepper-flash built in which is a more up to date version then the one officially supported from Adobe.

If you still need to install it then add Canonical Partners to your software sources. To do this, go to System Settings, then open Software & Updates and on the tab "Other Software" make sure Canonical Partners is ticked. Then proceed normally with:

sudo apt update
sudo apt install adobe-flashplugin