Consider the system of equations. -3x2 + 7x3 = 4 1+2x2-x30 5x1-2x2-3 Compute the determinant of the given equations. (Round the final answer to the nearest integer.) Use Cramer's rule to solve for the x's of the given equation. (Round the final answers to four decimal places.) Use Gauss elimination with partial pivoting to solve for the xs of the given equations. (Round the final answers to four decimal places.) Show detailed solutions for the above 3 methods. If Matlab is used, please provide at least one hand written calculation for each method