See [systemsOfLinearEqutaions/typesOfSolutionSets/freeVariables.tex](https://github.com/mooculus/linearAlgebra/blob/5a109de0f45b58e1e132a48602d8d24482aab7e2/systemsOfLinearEqutaions/typesOfSolutionSets/freeVariables.tex) Suppose we have a consistent system with n=4n=4 and r=3r=3. Then this system is This question should delete the word "consistent"