For every positive 2-digit number, x, with tens digit / and units digit u, let y be the 2-digit number formed by reversing the digits of x Which of the following expressions is cquivalent to x- y ? E 9(-4) G. 9(#-1) H. 9t-u J. 9u-t K. 0 %3D

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A: Topic = Algebra

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