Question 326751
[A]={{{(matrix(2,2,2/3,4/9,3,-2))}}}
[b]={{{(matrix(2,1,1,4))}}}
det[A]={{{-8/3}}}
[A]inv={{{(-3/8)*(matrix(2,2,-2,-4/9,-3,2/3))}}}
[x]={{{(matrix(2,1,17/12,1/8))}}}