Open Finder
Go to Applications
Find the app you want to delete
Drag the app to the Trash
Or right-click the app and choose Move to Trash
Enter your Mac password if prompted
Empty the Trash to permanently delete the app
If the app is open, quit it first before deleting
For apps from the App Store, you can also delete them from Launchpad by holding Option until the apps jiggle, then clicking the delete button if available