Question

What is the solution to the system of equations?
{2x + y - z = 7
{-x - 2y - 2z = -9
{x + 3y - 3z = 6
A: (3, 2, 1)
B: (3, 2, -1)
C: (-3, 2, 1)
D: (3, -2, 1)

Answer 1

i think B hope this helps!

Answer 2

The answer is B hope this helps