Question

X+y-2z=-2 and 2x-y+z=9 and x+3y+2z=4

Answer 1

x = 3, y = -1, z = 2

Explanation:

x + y -2z = -2

x = -2-y+2z

-3y+5z-4=9

2y+4z-2=4

y = - (-5z+13)/3

(22z-36)/3-2 = 4

z = 2

y = (-5 * 2 +13)/3

y = -1

substitute into x + y -2z = -2

x = 3