Răspuns :
a+83= 2· ( b+49)
S=123+49+83=255
b=255:3=85
a=85·2 +170
verificare :
85+170=255
S=123+49+83=255
b=255:3=85
a=85·2 +170
verificare :
85+170=255
123+83+49=255
255:3=85
85*2-83=87 primul numar
85-49=36al doilea numar
255:3=85
85*2-83=87 primul numar
85-49=36al doilea numar