Question

X+4y+3z=2, 2x-6y+6z=-3, 5x-2y+3z=-5

Answer 1

Answer:

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

Step-by-step explanation:

X+4y+3z=2 (a)

2x-6y+6z=-3 (b)

5x-2y+3z=-5 (c)

let (c) - (a) : 4x-6y = -7 (d)

let (c)x2 - (b) : 8x+2y=-7 (e)

let (e) - (d)x2: 14y=7 → y=1/2

x = -1, z = 1/3