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QUICK ANSWER
"De qué" is a phrase which is often translated as "what", and "de lo que" is a phrase which is often translated as "of what". Learn more about the difference between "de qué" and "de lo que" below.
de qué(
deh
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
de lo que(
deh
loh
keh
)