Find all solutions (if any) to each of the following systems of linear equations.
(a) x + y + 2z = 8
3x - y + z = 0
-x + 3y + 4z = -4
(b) -2x + 3y + 3z = -9
3x - 4y + z = 5
-5x + 7y + 2z = -14
(c) x + y - z=10
-x + 4y + 5z = -5
x + 6 y + 3z = 15
(d) x + 2y - z = 2
2x + 5y - 3z = 1
x + 4y - 3z = 3
(e) 5x + y = 2
3x - y + 2z = 1
x + y - 2 = 5
(f) 3x - 2y + z = -2
x - y + 3z = 5
- x + y + z = -1
(g) x+ y+ z = 2
x +z = 1
2x + 5y + 2z = 7
(h) x + 2y - 4z = 10
2x - y + 2z = 5
x + y - 2z = 7