The equation "x = 7 - 3" represents a simple arithmetic operation where the value of x is determined by subtracting 3 from 7. This operation is part of basic mathematics, specifically dealing with integers. When you perform the subtraction, you find that 7 minus 3 equals 4. Therefore, the solution to the equation is x = 4. This means that the value of x is 4, which can be used in further calculations or problem-solving scenarios.