Răspuns :
a+b+c=868
a+b=637
b+c=391
inlocuiesti
a+b+c=868
637+c=868/-637=> c= 231
b+c=391
b+231=391/-231=> b= 160
a+b=637
a+160=637/-160=> a= 477
Verificare:
477+160+231=868- adevarat
a+b=637
b+c=391
inlocuiesti
a+b+c=868
637+c=868/-637=> c= 231
b+c=391
b+231=391/-231=> b= 160
a+b=637
a+160=637/-160=> a= 477
Verificare:
477+160+231=868- adevarat
a+b+c=868
a+b=637
b+c=391
a=868-391=477
c=868-637=231
b=868-477-231=160
=c=
a+b=637
b+c=391
a=868-391=477
c=868-637=231
b=868-477-231=160
=c=