a+b+c=697390
a+b=344570 : a =344570-b
b+c =450996 : c =450996-b inlocuim pe a si c in prima relatie
344576-b +b +450996-b =697390
b =344570+450996-697390
b =98176
a =344570-b
a =344570-98176 =246394
c =450996-b
c =450996-98176 =352820
( verif 246394+98176+352820 =397390 )
