If `A=[[1,2,3] , [-1,1,2] , [1,2,4]], B=[[-3],[-6],[-9]]` and `AX=B` then find `X`

If A=[[1, 2, 3], [-1, 1, 2], [1, 2, 4]], B=[[1], [2], [3]] and AX=B , then X=

If A=[[3,2,-1],[2,-2,0],[1,3,1]],B=[[-3,-1,0],[2,1,3],[4,-1,2]] and X=A+B then find X

If A=[[1, 2], [-1, 3]], B=[[0, 1], [2, 4]] and AX=B , then X=

If A=[[1, -1, -2], [2, 1, 1], [4, -1, 2]], B=[[3], [5], [11]], X=[[x], [y], [z]] and AX=B then X=

If A=[[2,-1,5] , [4,0,3]] and B=[[-2,3,1] , [-1,2,-3]] then find A'+B'

If =[[1,4,-1],[2,6,5]] and B=[[3,-2,-6],[2,0,-7]] , find A+B and A-B

If A=[[2,3,-4],[1,0,6],[-2,1,5]],B=[[5,1,2],[6,-1,4],[5,3,-4]] , find 2A-3B .

A=[[1,3,-12,2,-13,0,-1]] and B=[[-2,3,-1-1,2,-1-6,9,-4]]

If A=[[1,2,5],[3,4,6]] and B=[[4,0],[2,1],[1,1]] then find AB

If A=[[1,2,3],[-1,0,2],[1,-3,1]], B=[[4,5,6],[-1,0,1],[2,1,2]], C=[[-1,-2,1],[-1,2,3],[-1,-2,2]] find A-2B+3C. Also verify that (A+B)+C=A+(B+C).