The equation "X = 100" indicates that the variable X is equal to the numerical value 100. In mathematics, this is a simple expression that defines X as a specific quantity. It can be used in various contexts, such as solving equations or representing a fixed value in a problem. This equation can also be applied in real-world scenarios, such as measuring temperature, where X could represent degrees Celsius or Fahrenheit. Understanding that X equals 100 helps in calculations and comparisons, making it a fundamental concept in both mathematics and practical applications.