Given A=[54−16]\displaystyle {A}={\left[\begin{array}{cc} {5}&{4}\\-{1}&{6}\end{array}\right]}A=[5−146] , find A−1\displaystyle {A}^{{-{1}}}A−1 . If A−1\displaystyle {A}^{{-{1}}}A−1 does not exist, write "DNE" in each box.
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