5. What is the solution to the system of equations?

{-x + 2y + z = 10

{ z = 6

{3x - 2y + 2z = 8

A: (0, 2, - 6)

B: (0, 2, 6)

C: (-1, 2, 6)

D: (0, - 2, 6)

B.

This can be done by plugging 6 in for z in the first and third equations. After doing so, you can solve for either of the other two variables and get an answer based on the substitution method.