Question

Solve the following system of equations.

2x – y + z = –3
2x + 2y + 3z = 2
3x – 3y – z = –4

Answer 1

You can add the first and third equations together....
Not sure how far you'd get, but...

Answer 2

It is on of these if that helps
(1, 3, –2)
(–1, 3, 2)
(1, –3, 2)
(1, 3, 2)

Answer 3

You can try plugging each of the solutions in to see which one satisfies all three equations.

Answer 4

Or, you can try Gaussian elimination. What have you tried?