Hi,

My house and my garage are yellow.

"A házam és a garázsom sárga."

a = def. art. = "the" in English

ház = house, házam = my house. (Hungarian is an agglutinative language, we use a lot of suffixes to express the situation we are trying to describe.)
és = and
garázs = garage, garázsom = my garage,
sárga = yellow.
Note, the "is/are" is missing. In Hungarian, we leave it out on purpose when we are talking in simple present tense, and they only show up in other tenses, to highlight we're talking about the future or past, or in conditional, etc. For example if i were saying that "My house was green" (before), i'd say "A házam zöld volt." The word "volt" is the equivalent of  "was" (and in some situations "were").

I hope it helped,
Tom