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Afla nr a,b,c ștind ca a+b+c=1762, a+b=1126, iar b-c=216

Răspuns :

a+b+c=1762
a+b=1126
b-c=216
1126+c=1762
c=1762-1126
c=636
b-636=216
b=636+216
b=852
a+852+636=1762
a+1488=1762
a=1762-1488
a= 274