Here's a summary of the key parts:
* Lupin's Death: While fighting Fenrir Greyback, Lupin is fatally wounded. He dies protecting Harry, Ron, and Neville.
* Tonks' Death: Tonks is also killed during the Battle of Hogwarts. The specific details of her death aren't given, but it's implied that she died fighting alongside Lupin and protecting Harry.
It's important to note that J.K. Rowling deliberately doesn't detail the specific circumstances of their deaths, adding to the tragic impact of their loss.