Hello, can you please help me solve this? Step by step

[2.5 points in total] Given the following system of linear equations: 15x4y7z14=0 4x+6yZz34=0 3x2y+122=1 a) [0.75 points] Find the determinant of the coefficient matrix. Can we solve the system by using Cramer's rule? Why? b) [1.25 point] Solve the system given above by using Cramer's rule. c) [0.5 points] Given the following matrices A and B _ m 3 _ 8 n A ' (5 8) B ' (5 2) Calculate the values of \"m\" and \"n\" so that the matrix B is equal to A'1