Question 356625
[A]={{{(matrix(3,3,2,-1,-3,4,3,2,-3,2,5))}}}
[x]={{{(matrix(3,1,x,y,z))}}}
[b]={{{(matrix(3,1,1,-4,-3))}}}
.
.
.
[A][x]=[b]
[x]=[A]inv[b]
.
.
.
det[A]={{{-3}}}
.
.
.
[A]inv={{{-(1/3)*(matrix(3,3,11,-1,7,-26,1,-16,17,-1,10))}}}
.
.
.
[x]=[A]inv[b]={{{-(1/3)*(matrix(3,3,11,-1,7,-26,1,-16,17,-1,10))*(matrix(3,1,1,-4,-3))}}}
[x]={{{(matrix(3,1,2,-6,3))}}}