I am thinking of two numbers which have the two same digits. The sum of their digits is 9 and the difference between the two numbers is 27 . Find the unknown number.

X+y =9

10x+y-10y-x =27

9x-9y -27

x-y =3

x+y =9

2x=12

x =6

y =3

6+3=9

the number is 63 . 63-36 =27

The numbers are 63 and 36

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