@PocketDoor,
Utilitarianism: In the long run, even if it does not impact the extended well-being of the person asked to do the task negatively, does not benefit either party for the one to do the other's homework.
Deontological ethics: An internet stranger doing a student's home work would break the general rules of academic honor, and perhaps cast a shadow on the stranger's own past academic conduct.
This example, in particular, while it highlights the stark contrast between their basic principles, shows that they can agree in execution.