X+24=42

To solve the equation \( X + 24 = 42 \), you need to isolate \( X \).

1. Subtract 24 from both sides of the equation:

   \[ X + 24 - 24 = 42 - 24 \]

2. This simplifies to:

   \[ X = 18 \]

So, \( X = 18 \).