[1 2 31 Let A =3 1 2 -1/3 2/3 and A-1 =-1/3 5/3 2/3 -4/3 -1/31 -7/3 5/3 L2 0 1. [1 2 3 1001 2| 60 by using the inverse matrix. 0 1150 Solve 3 1 L2

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