Translated
Translated
Updated according to feedback
Merge pull request #321 from jcarlosgarcia/hw-5-3

Completed translation of "27-HW_5_3". Resolves #317
Updated after watching the video lecture
Merge pull request #322 from jcarlosgarcia/hw-5-4

Completed translation of "28-HW_5_4". Resolves #318
Copied week6 files to Spanish directory before to translation.