Creating your first LaTeX document. Open an example of the amsmath package in Overleaf. This is empty by default.
Open an example in Overleaf.
Without them usually the next letter or digit will be used but that isnt usually what you want. L a T e X allows two writing modes for mathematical expressions. Without them usually the next letter or digit will be used but that isnt usually what you want. Choosing a LaTeX Compiler.