This is the 7967th most frequent Polish word.
młodszym
"Młodszym" means "younger" in English.
"młodszym" is used here in an instrumental case as it describes the role of "younger" in relation to "bratem".
Mam młodszym bratem owoc muzycznego talentu.
My younger brother is the result of musical talent.
"młodszym" is in the dative case as it explains for whom the task is designated.
Nie jest to trudne zadanie dla młodszym widzów.
This is not a difficult task for younger viewers.
"młodszym" is again in the instrumental case because it describes involvement in the discussion.