the sum of the digits of two digit number is 12 if the new number formed by reversing the digit is greater than the original number by 54 find the engine number check your answer
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let the unit digit is x and tense digit is y then the number is 10x +y by reversing the digits 10y+x first condition x+y=12 eq(1) second condition 10x+y+54=10y+x (eq) solve equation 1 and two x=3 and y=9 the number is 36 and reverse 93
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