EIGHT EQUATIONS
  '--- Number of Equations ---
  8
  '--- Matrix A() in  Ax = B ---
  6  0  1  2  0  0  2  1
  0  5  1  1  0  0  3  0
  1  1  6  1  2  0  1  2
  2  1  1  7  1  2  1  1
  0  0  2  1  6  0  2  1
  0  0  0  2  0  4  1  0
  2  3  1  1  2  1  5  1
  1  0  2  1  1  0  1  3
  '--- Right hand side B() in Ax = B ---
  1  1  1  1  1  1  1  1