r_{0d},\\ R_{0} & \geq & r_{0d},\\ \textrm{and }R_{b} & \geq & r_{0b}+r_{0b}+I(X;A),\end{aligned}$$ Applying Fourier-Motzkin elimination [@Elgammal Appendix C] to the inequalities above, the inequalities in (\[eqn: RD\_