Questions & Answers about הוא יצא מהבית בלי שלקח מפית, ועכשיו הוא מבקש ממני אחת.
מהבית is the preposition מ־ (from) attached to הבית (the house / home).
So:
- הבית = the house
- מ־ + הבית = מהבית = from the house / from home
In Hebrew, short prepositions often attach directly to the following word. When מ־ comes before a word with ה־, the result is commonly מה־.
So הוא יצא מהבית is literally he went out from the house, but in natural English it is often just he left home or he left the house.