1 4 1 1 2 7 2 2 Let A = 1 4 7 8 4 2 2 Decide whether the matrix A is invertible, and if so, use the adjoint method to find its inverse. Enter as a matrix, exactly in fractional from if required, if not invertible enter "NA". A-1

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A: I have explained everything with in the solution. Please go through that.

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