In LaTeX, equations are numbered automatically by default. However, there may be times when you want to reset the equation numbering, for example, when you are starting a new section or chapter. To do this, you can use the \setcounter{equation}{0} command. This command will reset the equation counter to 0, so that the next equation will be numbered 1.
Here is an example of how to use the \setcounter{equation}{0} command: