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A=[3-4 2 2 3 5 1 0 1] , find A^(-1) and ...

`A=[3-4 2 2 3 5 1 0 1]` , find `A^(-1)` and hence solve the following system of equations: `3x-4y+2z=-1,\ \ 2x+3y+5z=7,\ \ x+z=2`

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