Respuesta :

(2n-1)+(2n+1)+(2n+3)=111
6n+3=111
6n=108
n=18
Largest number = 2n+3=2(18)+3=39

Check:
(2(18)-1)+(2(18)+1)+(2(18)+4)=111
35+37+39=111
111=111 CHECK