Question 910711
Use Cramer's rule,
{{{A=(matrix(3,3,1,-3,3,
                 2,0,-1,
                 0,3,1))}}}
{{{abs(A)=27}}}
.
.
.

{{{A[x]=(matrix(3,3,-11,-3,3,
                 8,0,-1,
                 10,3,1))}}}
{{{abs(A[x])=93}}}
.
.
.
{{{A[y]=(matrix(3,3,1,-11,3,
                 2,8,-1,
                 0,10,1))}}}
{{{abs(A[y])=100}}}
.
.
.
{{{A[z]=(matrix(3,3,1,-3,-11,
                 2,0,8,
                 0,3,10))}}}
{{{abs(A[z])=-30}}}
.
.
.
{{{x=abs(A[x])/abs(A)}}}
{{{x=93/27}}}
{{{x=31/9}}}
.
.
.
{{{y=abs(A[y])/abs(A)}}}
{{{y=100/27}}}
.
.
.
{{{z=abs(A[z])/abs(A)}}}
{{{z=-30/27}}}
{{{z=-10/9}}}