Consider the following system of linear equations
2x + 4y + 6z = 0
4x + 5y + 6z = 3
7x + 8y + 9z = 6
1) Show that the system connot be solved by means of cramers rule
2) Use Gaussian elimination to solve the system. Obtain all solutions
3) Does the coefficient matrix of the system have an inverse? Justify answer?