When running in winter, I rush to run 1.8km every day. We know that the distance we run in a hurry every day is one-ninth less than that of Mingming. We need to find out how many meters Mingming runs every day. Suppose Mingming runs a distance of X meters every day. According to the topic, we know that the distance of running in a hurry is one ninth of the obvious distance MINUS the obvious distance.

Therefore, the hurried distance = x-x/9 = 1.8× 1000m (because 1.8km is equal to 1800m). Using the mathematical equation, we can express it as: x-x/9= 1800. Now we have to solve this equation and find the value of x, and the calculation result is: Mingming runs 2025m every day.

Expand the vertical one-dimensional linear equation into a two-dimensional linear equation, or expand the one-dimensional equation into a multi-dimensional equation. This method can increase the complexity of the equation and the range of adaptive fiber matching. Add operators such as square, root and logarithm to the equation, or change operators such as addition, subtraction, multiplication and division in the equation. This way can change the properties and results of the equation.

By adding or changing constant terms to the equation, the equilibrium point or offset of the equation can be adjusted. Add or change the loose fiber terms of trigonometric function, exponential function and logarithmic function in the equation. This method will introduce a new variational law or increase the complexity of the equation.

Function and significance of equation

Equations can be used to describe laws in mathematics, physics, chemistry and other disciplines, such as Newton's second law, law of universal gravitation, ohm's law and so on. Equations can be used to solve various practical problems, such as engineering design, financial investment, population prediction and so on. By establishing equations, we can better understand and analyze problems and find solutions.

Equation can be used to predict future trends and results, such as population growth model and stock price prediction. By analyzing and solving the equation, we can predict the future trends and changes, so as to make better decisions. Equations can be used to simplify complex calculation processes, such as solving multivariate linear equations and solving calculus.