Question 911623
2x+3y-z=5
<u>-(2x+3y-2z=2)</u>
z = 3
......
4x+4y-= 12
<u>-2(2x+3y = 8)</u>
 -2y = -4, y = 2  and x =1 {{{4x+4(2) = 12}}}
(1, 2, 3)