The equation "X = 55" indicates that the variable X is equal to the number 55. In mathematics, this is a simple expression that shows a direct relationship between a variable and a constant value. It can be used in various contexts, such as solving equations or representing a specific quantity. In practical terms, if you encounter "X = 55" in a problem, it means that whenever you see X, you can replace it with 55. This concept is fundamental in algebra and helps in understanding how variables can represent fixed values in different scenarios.