K

Use Gaussian elimination to solve

2x+y-5z = -11,

3x +2y+z= 1,

x+y+6z= 12.

x=y=z=

(Type your answers in terms of t, where z = t, and type N if there is no

solution. Simplify your answers. Use integers or fractions for any

numbers in the expressions.)

b

X=

Z=