please use MATLAB

Solve the following simultaneous equations using the Gauss elimination method: x + 2x; x3 + x, +5x3 = 8 4x; - 2x + 3x3 + x2 3x3 = 4 3x + x2 + 2x, - x+7x3 = -15 2x; +3x, +5x3 +7x4 - 5x5 = 8 9x; + x2 + x3 + 7x. - Xs = 10 1) Modify the function given in Figure 9.4 to solve this problem in one single program (not using the function). 2) Use the Matlab function "inv(A)" to solve this problem and compare your result with the one obtained from 1)