Given the system of linear equations below: 2y + 5z = 7 7x + y 2z = 6 2x + 3y + 8z = 13 %3D a) Explain how you would solve the above system of equation using Gauss elimination method or gauss-Jordan method in order to avoid computational [6 marks] b) Solve the above problem using the best method among the direct solution errors. methods stated above. [9 marks] c) State with reasons the nature of solution that characterizes the above problem. [4 marks] d) How does the method you chose, improves the time complexity of the adopted algorithm?