Translation:Jij eet warme soep.
When should I add "e" at the end of the adj..
Have a look at this topic on adjectives: https://www.duolingo.com/comment/3888221
Isn't eet and eten the same? I know eten can also mean food but it has meant eat in other sentences.
Yes, but eten is the plural form. It's perfectly correct if you say "jullie eten" (you (=several people) eat), but if you use "jij", you have to use the corresponding verb form, too: jij eet.