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A plus B plus c=864 a plus b=637 b plus c =391 a=? b=? c=? Va roggg repedee​

Răspuns :

A+B+C = 864

A + B = 637

B + C = 391

C = 864-637

C = 227

A = 864-391

A = 473

A+C = 473+227 = 700

B = 864-700

B = 164