$$ \begin{pmatrix} Y \\ Cb \\ Cr \end{pmatrix} = \mathrm{Round} \left\{ \begin{pmatrix} 0.2126\times\frac{219}{255} & 0.7152\times\frac{219}{255} & 0.0722\times\frac{219}{255} \\ -\frac{0.2126}{1.8556}\times\frac{224}{255} & -\frac{0.7152}{1.8556}\times\frac{224}{255} & 0.5\times\frac{224}{255} \\ 0.5\times\frac{224}{255} & -\frac{0.7152}{1.5748}\times\frac{224}{255} & -\frac{0.0722}{1.5748}\times\frac{224}{255} \end{pmatrix} \begin{pmatrix} R \\ G \\ B \end{pmatrix} \right\} + \begin{pmatrix} 16 \\ 128 \\ 128 \end{pmatrix} $$
Is it possible to derive formula from above matrix that converts YCbCr to RGB? I am newbie to maths.
I have YCbCr value already available, I want to convert it to RGB.