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    <title>Exact Rational Solutions of Linear Equations on Sulprobil</title>
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      <title>Linear Equations with Rational Coefficients (VBA)</title>
      <link>https://www.sulprobil.de/linear_equations_en/</link>
      <pubDate>Wed, 20 May 2026 04:32:00 +0100</pubDate>
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      <description>&lt;h2 id=&#34;abstract&#34;&gt;Abstract&lt;/h2&gt;&#xA;&lt;p&gt;Linear equations of the form A * x = b with the non-singular quadratic&#xA;matrix A and the result vector b have a unique solution because the&#xA;determinant of A is not zero.&#xA;If the coefficients of A and of b are rational numbers then&#xA;the solution is also rational.&lt;/p&gt;&#xA;&lt;p&gt;&lt;img src=&#34;https://www.sulprobil.de/Linear_Equations_with_rational_coefficients.png&#34; alt=&#34;Linear_Equations_with_rational_coefficients&#34;&gt;&lt;/p&gt;&#xA;&lt;h2 id=&#34;see-also&#34;&gt;See also&lt;/h2&gt;&#xA;&lt;p&gt;&lt;a href=&#34;https://www.sulprobil.de/sbnrn_en/&#34; title=&#34;sbNRN&#34;&gt;sbNRN&lt;/a&gt;&lt;/p&gt;&#xA;&lt;h2 id=&#34;literature&#34;&gt;Literature&lt;/h2&gt;&#xA;&lt;p&gt;(External Link!) &lt;a href=&#34;http://www.sciencedirect.com/science/article/pii/0771050X7890027X/pdf?md5=b667c7b5a79db140f4b1e10319c6ba89&amp;amp;pid=1-s2.0-0771050X7890027X-main.pdf&#34;&gt;Oliver Aberth, A method for exact computation with rational numbers,  JCAM, vol 4, no. 4, 1978&lt;/a&gt;&lt;/p&gt;</description>
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