E-learning worked, mainly (2,7)
I believe the answer is:
in general
'mainly' is the definition.
(I've seen this before)
'e-learning worked' is the wordplay.
'worked' is an anagram indicator.
'e'+'learning'='elearning'
'elearning' anagrammed gives 'IN GENERAL'.
(Other definitions for in general that I've seen before include "Largely" , "on the whole" , "More-or-less" , "Overall" , "Commonly" .)