Question 911165
{{{A=(matrix(3,3,1,1,1,1,2,3,1,3,4))}}}
{{{A^(-1)=(matrix(3,3,1,1,-1,1,-3,2,-1,2,-1))}}}
{{{(matrix(3,1,x,y,z))=A^(-1)*b}}}
{{{(matrix(3,1,x,y,z))=(matrix(3,3,1,1,-1,1,-3,2,-1,2,-1))*(matrix(3,1,1,6,6))}}}
{{{(matrix(3,1,x,y,z))=(matrix(3,1,1,-5,5))}}}