Math 163 Online Problems Supplemental Lessons on Gaussian Elimination

1. Change to the augmented matrix and solve by back substitution.

2x + 3y – 4z = 19

2y – 4z = -2

3z = 9

2. Solve the matrix by back substitution:

3. Use back substitution to solve the augmented matrix in x,y,z,w:

4. Solve the system of equations by forming the augmented matrix and simplifying by using gaussian elimination method and back substitution.

5. Solve the system of equations by forming the augmented matrix and simplifying by using gaussian elimination method and back substitution.

6. Solve the system of equations by forming the augmented matrix and simplifying by using gaussian elimination method and back substitution.