Inserting line breaks in LaTeX can be achieved using specific environments designed for multi-line equations, such as the align* environment. To create line breaks, the code must include \begin{align*} at the start and \end{align*} at the end, with each line separated by \\. The ampersand (&) is used to align equations at specific points. Some users express frustration over the perceived complexity of this method compared to simpler HTML line breaks. Alternatives discussed include using the array environment or inserting paragraph breaks with \par. However, the consensus is that using the align* environment is the standard approach for formatting multi-line equations in LaTeX.