Răspuns :
a+b=123+274=397
b+c=274+382=656
a+b+c=123+274+382=779
b+b=274+274=548
b+c=274+382=656
a+b+c=123+274+382=779
b+b=274+274=548
A+b=123+274=397
B+c=274+382=656
A+b+c=123+274+382=779
B+b=274+274=548