Question 35030
Look at my Lesson on how to use Cramer's rule. Basically you need to compute 4 3x3 determinants for each of the following:


{{{ D = (matrix(3,3,
-9, 1, 6,
5, 4, -5,
2, -8, -2)) }}}


{{{ D[x] = (matrix(3,3,
-7, 1, 6,
-1, 4, -5,
8, -8, -2)) }}}


{{{ D[y] = (matrix(3,3,
-9, -7, 6,
5, -1, -5,
2, 8, -2)) }}}


{{{ D[z] = (matrix(3,3,
-9, 1, -7,
5, 4, -1,
2, -8, 8)) }}}


Jon.