It&#x27;s funny because the whole discussion only exists because there is no division operator in &quot;matrix math&quot;. For scalars we can simply write a &#x2F; b (instead of a^-1 * b) and everyone knows how to calculate it. But for some reason there&#x27;s no such thing when dealing with matrices.<p>Well it turns out there is something <i>like</i> division for matrices and it&#x27;s called factorization (followed by back-substitution) and there are actually many ways to do it, not just one (each having different numerical properties and complexity).<p>So whenever I see A^-1 * b in an equation I view it as something like b &#x2F; A and I know there&#x27;s the choice of &quot;division methods&quot; to use for this.