Question 1042299
Can I please have your assistance? Solve the system : x + y + z = 6, 2x - y + z = 3, x + y - z = 0
<pre>x + y + z = 6 -------- eq (i)
2x - y - z = 3 ------- eq (ii)
x + y - z = 0 -------- eq (iii)
3x = 9 ------- Adding eqs (i) & (ii)
Instead of 2x - y - z = 3, equation (ii) should have been: 2x - y + z = 3 , and so: {{{highlight_green(matrix(3,1, x = 1, y = 2, z = 3))}}}