The equation "x = 2" tells us that the variable x is equal to the number 2. This means that whenever we see x in a mathematical expression or equation, we can replace it with 2. For example, if we have the equation x + 3, we can substitute x with 2 to find that 2 + 3 equals 5. Understanding "x = 2" is important in algebra because it helps us solve problems. When we know the value of x, we can find unknowns in equations. This concept is foundational for more complex topics in mathematics, such as functions and graphing.