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If A=[[0 ,1 ,3],[ 1, 2,x],[2, 3, 1]] and...

If `A=[[0 ,1 ,3],[ 1, 2,x],[2, 3, 1]]` and `A^(-1)=[[1//2,-4 ,5//2],[-1//2, 3,-3//2],[ 1//2,y,1//2]]` ,find `x ,\ y` .

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