Linear Equations System Solver is a free Android application developed by Webtoweb that comes in handy for mathematicians dealing with systems of linear equations. With this calculator, you can solve any system of linear equations by simply selecting the number of variables (2, 3, or 4) and setting the different values. Once you click on the 'calc' button, the solution will be displayed instantly with the values of the different variables. You can work with negatives, numerals, and fractioned numbers.

This application is designed to solve any collection of one or more linear equations involving the same set of variables. It is a perfect tool for mathematic students or scientists working with systems of linear equations. The user interface is simple and easy to navigate, making it a great option for quick and efficient calculations on the go.