Respostas

2014-04-13T17:40:43-03:00
  \left[\begin{array}{ccc}1&2&1\\3&-2&1\\x&y&1\end{array}\right]
2x - 2 + 3y - 6 + 2x - y
4x+2y-8 = 0
equação reduzida:
Y =  \frac{4x - 8}{2}
1 5 1