3. On the board, there was a two-digit number that is not divisible by 10. Alyosha increased its first digit by five times, and decreased the second digit by some integer factor. The result was a new two-digit number that is divisible by the original number. Find the original number. If there are multiple possible answers, list them in any order separated by a semicolon.
Answer: $17 ; 18|17,18| 18,17 \mid 18 ; 17$

## Examples of answer notation:

11

$22 ; 33$

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