3x+2y-z=-15; 5x+3y+3z=0; 3x+y+3z=11; -6x-4y+2z=30;

Question

Solve question by guas jorden method

Answer 1

The system of equations are

Write the equations into matrix form .

 is coefficient matrix,  is variable matrix and  is constant matrix.

Solve the equations in Gaussian elimination method.

The augmented matrix is .

, R3 are represents first row, second and third row.

Eliminate second row and first coloumn.