a+b-+c=1144
a+n=223
b+n=435
c+n=546
Adunam cele trei relatii si obtinem a+b+c+3n=1144
Stiim ca suma a+b+c=1144, deci 1144+3n=223+435+546
1144+3n=1204
3n=1204-1144=60
n=6-:3=20
De aici lucrurile se simplifica
a+20=223 a =223-20=203
b+20=435 b=425
c+20=546 c=566
Verificare 203+415+526=1144