Review problem at university (3,2)
I believe the answer is:
sum up
'review' is the definition.
(thesaurus)
'problem at university' is the wordplay.
'problem' becomes 'sum' (arithmetic problem).
'at university' becomes 'up'.
'sum'+'up'='SUM UP'
(Other definitions for sum up that I've seen before include "Make final precis of evidence" , "What a judge may do" , "What judge does for jury before they retire to consider verdict" , "Of a judge, give the main points of the evidence for jury" , "Provide a synopsis" .)