Question

Use the elimination method to solve the following system of equations.

2x – y + z = –3
2x + 2y + 3z = 2
3x – 3y – z = –4
Answer

(–1, –3, –2)

(1, 3, –2)

(1, –3, –2)

(1, 3, 2)

Answer 1

ROW REDUCE THE FOLLOWING MATRIX
\[\left( \matrix{2&-1&1&-3\\2&2&3&2\\3&-3&-1&-4} \right) \]

\[\left( \matrix{1&0&0&1\\0&1&0&3\\0&0&1&-2} \right) \]
you get x=1,y=3 and z=-2 or (1,3,-2)