How to get rid of older versions

Technical Problems SketchUp
1

I have 3 versions on my Mac now and i want to remove 2

2

Drag the app from the Applications folder to the Trash (located at the end of the Dock), then choose Finder > Empty Trash. If you change your mind, before emptying the Trash, select the app in the Trash, then choose File > Put Back. WARNING: When you empty the Trash, the app is permanently removed from your Mac.

3

If you want to absolutely, completely remove the old versions, also look for files in

/Users/{your name}/Library/Preferences

/Users/{your name}/Library/Application\ Support/SketchUp\ 201x/

(for versions since 2013. Older versions used slightly different naming but kept things in the same general locations). Make sure the files have names matching the version you are removing.