Q: Tried to delete photos and only ones that were selected are not editable. How do I erase the pictures now

I tried to erase a large amount of pictures from my phone and only about half of the pictures erased. The other half, around 300 pictures, didn't erase and now every single one that didn't erase says that it is not editable. Only those photos, the ones that didn't erase, are like that, none of the other pictures taken at the same time or anything like that. I really want to erase those photos but now it's trying to tell me I can't. I already tried clearing iPhoto and turning my phone off and on. Please, any suggestions? What is going on???