Răspuns :
a+b=304
a-b=304:8
a-b=38 => a=38+b
38+b+b=304
2b=304-38
2b=266 => b=266:2 => b=133
a=38+133 => a=171
verificam: 171+133=304
171-133=38
a-b=304:8
a-b=38 => a=38+b
38+b+b=304
2b=304-38
2b=266 => b=266:2 => b=133
a=38+133 => a=171
verificam: 171+133=304
171-133=38