You can get solutions with the least-squares method even if overdetermined systems (the number of equations is greater than the number of variables). It is written in C++. C++11 or later is required.
Systems of equations can be modelled as matrices in order to solve them The concept and example illustrated below explain the calculations that occur: $$ A \begin ...
Abstract: A non-linear feedback neural network based CMOS compatible circuit to solve a system of simultaneous linear equations is presented. The circuit has an associated transcendental energy ...