It is challenging to write equations for real-world situations because

real-world situations are often complex and cannot be easily modeled using mathematical equations. Additionally, there may be various factors and variables involved in a real-world situation that are difficult to quantify and represent mathematically. Furthermore, real-world situations often involve uncertainties and random events that are challenging to incorporate into equations. Moreover, real-world situations can change rapidly, making it difficult to create equations that accurately represent the dynamic nature of these situations. Overall, the complexity, unpredictability, and dynamic nature of real-world situations present challenges when it comes to writing equations to model them.