How to go to the line below, without changing horizontal position?

Question

I would like to start writing in math display mode, and then continue on the next line, from the exact same . Something like this:

abc = defg on this line
                       and i continue on the next line

This will be used inside \frac.

What would be the best way to achieve this? Preferably without using any packages (I'm sure there must be a way to get this done directly in LaTeX)...

If this were in text mode I could save the current horizontal position, then do a \newline, and then restore the position, maybe, but it's math mode.

Related: I want to indent the next line by an exactly specified position — Werner, Jul 07 '17 at 16:50
I will write \frac{A}{B}, and inside B, I'll want to skip to the line below. — Jay, Jul 07 '17 at 16:53
Must we tell a user for more than 6 years to show us a MWE? Nevertheless, see, e.g., multilined or gathered or aligned in mathtools and amsmath. — Schweinebacke, Jul 07 '17 at 16:54
@Schweinebacke: I don't have a MWE, I couldn't even get close to what I need, so I included the output I wanted. The array approach in Werner's answer seems to work for me -- I'll check. — Jay, Jul 07 '17 at 16:57
You have. You have a document with a \frac that should be splitted. So you can make a MWE. We do not need a solution, but an example to work with. — Schweinebacke, Jul 07 '17 at 16:59

score 3 · Answer 1 · answered Jul 07 '17 at 16:54

3

This is fairly trivial to obtain with just an array:

\documentclass{article}

\begin{document}

\[
  \setlength{\arraycolsep}{0pt} % May be needed, depending on your requirements
  \begin{array}{ l l }
    abc = defg &       \\
               & hijkl
  \end{array}
\]

\end{document}

answered Jul 07 '17 at 16:54

Werner

603,163

Yes -- of course! An array will work just fine (I'll check if no problems arise, but I thin it's perfect). Thank you! – Jay Jul 07 '17 at 16:58

score 3 · Answer 2 · answered Jul 07 '17 at 17:05

Quite simple with align (or aligned):

\documentclass{article}
\usepackage{mathtools}

\begin{document}

\begin{align*}
  abc = defg\text{ on this line} & \\
                        & \text{and I continue on the next line}
\end{align*}

\end{document}

How to go to the line below, without changing horizontal position?

2 Answers2