{"type":"rich","version":"1.0","title":"Linear equation (algebraic sum notation)","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"\\sum_{1}^{n}a_kx_k=b\">\\sum_{1}^{n}a_kx_k=b</span><div class=\"wb-embed-note\"><p>Where $a_k,b$ are constants, and $x_K$ are variables\n</p></div><footer><cite class=\"wb-embed-author\">Rong Martin-Siebler ZHOU</cite></footer>","width":640,"height":320}