Question 905036
x+y+z=-2
<u>x-y+2z=-5</u>  2x + 3z = -7
<u>3x+y+z=-12</u> 4x + 3z = -17
............
2x + 3z = -7  |multiplying thru by -2 to  eliminate the x variable by adding the Eqs
<u>4x + 3z = -17</u>
-3z = -3
z = 1, and x = -5 {{{2x = -10}}}
and
y = 2 {{{-5 + y + 1 = -2}}}
The ordered triple (-5, 2, 1) the solution for this System of EQs