English, asked by fostershania14, 6 months ago

two instances of you can use a notices

Answers

Answered by akraghav123

1

Explanation:

Number obtained on reversing the digits = 10y + x . Now, ⇒ 10y + x = 10x + y + 9 . ⇒ 10x - x + y - 10y = -9

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