<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> <span class="h-card" translate="no"><a href="https://mastodon.social/@regehr" class="u-url mention">@<span>regehr</span></a></span> I only really understand Fourier Motzkin elimination for LP (<a href="https://en.m.wikipedia.org/wiki/Fourier–Motzkin_elimination" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">en.m.wikipedia.org/wiki/Fourie</span><span class="invisible">r–Motzkin_elimination</span></a>). Maybe that can help you with the general case.</p>