# Latex/MathJax question: How to number equations?

Is it possible to number equations when posting questions at physics stack exchange, or any other stack exchange site enabled with MathJax?

I have tried .

• And on this topic, for those familiar with Tex but new to MathJax: both starred and unstarred versions of equation, align, and gather can be used, but they are identical and function as the starred variants (no numbers) unless \tag is used.
– user10851
Dec 24 '12 at 4:22

Yes, there is a \tag{} command. E.g.

$$1+1=2 \tag{1}$$

produces

$$1+1=2 \tag{1}$$

• Perfect. Thanks. It provides right margin numbering. Dec 23 '12 at 16:05
• How do you align a non-numbered equation with that? For example, if I had several intermediate steps that led up to $1+1=2$, but didn't want them numbered, how would I format those steps?
– user32023
Sep 23 '17 at 14:22
• If you mean outside MathJax, it is probably best to ask on TeX - LaTeX, but it sounds partly like a job for the align command.
– Qmechanic Mod
Sep 23 '17 at 14:28