[tex]a+b+c = 516 \\
\frac{a}{b} = \frac{1}{4} =\ \textgreater \ a = \frac{b}{4} \\
c-b = 84 =\ \textgreater \ c = 84+b \\
\text{Inlocuiesti in prima ecuatie si o sa obtii:} \\
\frac{b}{4} + b+84+b = 516 \\
\frac{b}{4} + 2b = 432 \\
b+8b = 1728 \\
9b = 1728 \\
b = 192 \\
a = \frac{b}{4} = \frac{192}{4} =48 \\
c = 84+b = 84 + 192 = 276[/tex]
