solved
v.v. to find the correct answer to a problem or a mystery. You use this when you figure out how to fix a difficult situation.
v. to find a solution, explanation, or answer for a problem, mystery, or conflict. Transitive — requires a direct object representing the issue being addressed.
The detective finally solved the mystery.
The engineering team worked through the night and eventually solved the technical issue with the server.
While the immediate crisis was solved through diplomatic intervention, the underlying tensions between the two neighboring regions remained largely unaddressed for several more decades.
The verb is transitive and takes a direct object.
The problem solved easily.The problem was solved easily.Learners often use 'solve' as an intransitive verb; however, a problem cannot solve itself, so the passive voice is required.