Răspuns :
A+B+C=860
C=213
A+B=860-213=>A+B=647
B+155=A
B+B+155=647
B+B=492
B=492:2
B=296
A=296+155
A=451
C=213
A+B=860-213=>A+B=647
B+155=A
B+B+155=647
B+B=492
B=492:2
B=296
A=296+155
A=451