You may be able to delete them by going through the settings and deleting the app that way. Try Settings > General > Storage & iCloud Usage > Manage Storage. There you will see a list of all apps that are installed on your phone. Pick the app that you want to remove, and it will then have the option with a button with red text "Delete App". See if that works for you!
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Were these apps purchased from Apple's App store or iTunes?
If so, you cannot delete them. Apple feels you may at some time need them again so to remove them from sight there is an option to hide apps.
Otherwise, refer to the developer.
If an app you installed unexpectedly quits, stops responding, or won’t open - Apple Support follow on steps to delete. or Contact Apple Support.
How do I delete my not deletable apps?