Hey Benjamin, glad you enjoyed! In this particular case, this is more of a hobby project because it only has applications for solving linear equations, and cannot be extended to things like quadratics or third degree polynomials. However, the framework and idea of rewriting complex equations in clever ways that it uses can be expanded into equation solvers applications in advanced calculators, for example the TI-84 I commonly use. Because this framework is not manual —a manual solver follows a strictly written set of rules to address strictly identified types of equations, for example here — it can solve any equation, as long as the framework is written in a smart way.