Solve the following 4. x + 2y 8z = 0 2x 3y + 5z 0 3x + 2y 12z = 0 - 7. x + y + 13. 3w 15. - 10. 7x - 4y 2z = -6 16x + 2y + z = 3 - - Z = 4y + 6z = y + Z= 6x W 2x + 5y 2w 4x + 3y w + -3w- 4w - - y- 6 1 z = 0 0 z = 3 3z - = 5. 3x 8. systems of Equations. y + z = -2 6. 7x - 6 9x y 0 2x + 4y x + y = 6 17x + y + 2z = 2 17x + 8y 5z = 2 5x - 2y + z = 2 x + 5y + 2z 2x + 3y + 5x + 3y -4x + 7y 9x - 2y z = = = 20 = 22 11. x3y + 2z 5x - 15 2 15y + 7z = 10 16. = 14. 4w + 3x -w + 2x 3w - 9. 12. 3x x + 3x + Sy - W - x + 3y y -5w + 2x - 3w 4x + 7y 2w + 3x + y 1 + 1 - - - 2y + 4y+ 3z = 13 9y+ 13y + 3z 8y 2z.= -2 2z = 0 3z = 0 7z = 0 Z = z = - 7z -4 y + 2z = 3 1 3 3z = 3 5y + 4z = -5 2z = 1lz = = 11 33 = 7 1