The length of every side of a regular pentagon can be written in each of the equivalent forms \((3x-y)\) cm, \(\frac{2x+y+6}{2}\) cm and \((x+2y)\) cm.
Write down two independent equations connecting \(x\) and \(y\).
Solve the equations obtained in (a) to find \(x\) and \(y\).
Hence, find the perimeter of the pentagon.
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