Here is a brief video showing how to solve any 2×2 system of equations in Algebra using the TiNspire calculator – best of all : each step of the elimination method is shown. This handy Algebra Solver is available in Algebra Made Easy at www.TiNspireApps.com .
Using the Step by Step Equation Solver APP from www.TiNspireApps.com for the TiNspire CX CAS you select
the first option: 1: Step by Step Equation Solver
Enter any equation and view the steps until final answer is derived.
Since we are solving a trigonometric (thus periodic) equation in above example
we obtain infinity many solutions whose setup is displayed in the
last line. n11 represents a constant, think of it as constant K as typically used in text books.
If you set n11 equal to 0 for the first expression for the solution x you recognize the solution
derived step by step.