Discussion
The digits of a two-digit number add up to 8. Subtracting 18 from the number reverses its digits. The number is:
Answer: D
Subtracting 18 reverses the digits, so \( 9(a-b) = 18 \) and \( a - b = 2 \), while \( a + b = 8 \).
\[ a = 5, \quad b = 3 \quad\Longrightarrow\quad 53 \]
Checking: \( 53 - 18 = 35 \).
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