1.Write a system of linear equations for this system and clearly identify the matrix A in the matrix equation Ax=b.

2.Compute the determinant of A.

3.Compute the classical adjoint matrix (i.e., the adjugate matrix) of A.

4.Using your answers from problems 2 and 3, solve for A^-1 and x.

5.Use Cramer's rule to check your answer by solving for just x₁ and x₄.