Question

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

Answer 1

Daca a+b+c=1762 si a+b=1126 inseamna ca c=1762-1126=636
In relatia b-c=216 in inlocuim pe c si ne da b-636=216 deci b=216+636=852
a+852+636=1762 de unde rezulta ca a=1762-852-636=274

Answer 2

$a+b+c=1762 \\ \\ a+b=1126 \\ \\ b-c=216=>\boxed{b=216+c} \\ \\ 1126+c=1762 \\ c=1762-1126 \\ \\ \boxed{c=636} \\ \\ b=216+636 \\ \\ \boxed{b=852} \\ \\ a+852=1126 \\ \\ \boxed{a=274}$