Question

X+y+z=1
2x+4y+2z=-6
-X+9y-3z=-49
How can I solve this system of equations?

Answer 1

Explanation:

x + y + z = 1

-x + 9y - 3z = -49

10y - 2z = -48

2x + 4y + 2z = -6

-2x + 18y - 6z= -98

22y - 4z = -104

-20y + 4z = 96

2y = -8

y = -4

10(-4) - 2z = -48

-40 - 2z = -48

-2z = -8

z = 4

x - 4 + 4 = 1

x = 1

x = 1, y = -4, z = 4