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Use row reduction to nd the inverse of the given matrix if it exists, and check your answer by multiplication. (If the inverse doesn't exist, enter DNE in any cell of the matrix.) Submit ADSWEI' [3/10 Points] DETAILS PREVIOUS ANSWERS WANEFMAC7 5.3.027. MY NOTES Compute the determinant of the given matrix. If the determinant is nonzero, use the formula for inverting a 2 x 2 matrix to calculate the inverse of the given matrix. (If the inverse doesn't exist, enter DNE in any cell of the matrix.)