If `A=[{:(1,1,1),(1,0,2),(3,1,1):}]`, find `A^(-1)`. Hence, solve the system of equations :
`x+y+z=6`, `x+2z=7`, `3x+y+z=12`

If A=[{:(3,1,2),(3,2,-3),(2,0,-1):}] , find A^(-1) . Hence, solve the system of equations : 3x+3y+2z=1 , x+2y=4 , 2x-3y-z=5

If A=[[2,3,4],[1,-1,0],[0,1,2]] , find A^(-1) . Hence, solve the system of equations x-y=3, 2x+3y+4z=17, y+2z=7

If A=[[2,3,4],[1,-1,0],[0,1,2]] , find A^(-1) . Hence, solve the system of equations x-y=3, 2x+3y+4z=17, y+2z=7

If A=[[1,3,4],[2,1,2],[5,1,1]] , find A^(-1) . Hence solve the system of equations : x+3y+4z=8, 2x+y+2z=5 and 5x+y+z=7

If A=[{:(9, 7, 3), (5, -1, 4), (6, 8, 2):}]" find "A^(-1) and hence solve the system of equations: 9x+7y+3z=6, 5x-y+4z=1, 6x+8y+2z=4 .

If A=[(2,1,3),(4,-1,0),(-7,2,1)] , find A^(-1) and hence solve the following system of equations: 2x+y+3z=3 4x-y=3 -7x+2y+z=2