1

Update:

Here's what I meant. This was created in spreadsheet for demo purpose only. I just don't know how to achieve this using LaTeX.

sample image

...and here's my .tex file.

\documentclass{article}
\usepackage{mathtools}
\begin{document}

\begin{align*}
\text{Item A} &= 750 \\
\text{Item B} &= 500 \\
\text{Item C} &= 1,500\\
\cline{2-1}
\text{Total} &= 2,750 \\
\end{align*}

\end{document}

I need to add a + sign on the right side. I also need the numbers to be right-aligned like in sample image above. I've read about this somewhere online but forget the link/url.


Original question:

How to add math operator, i.e. (+) beside \cline in an equation?

\documentclass{article}
\usepackage{mathtools}
\begin{document}

\begin{align*}
a &= 2\\
b &= 3 \\
\cline{1-2}
c &= 5 
\end{align*}

\end{document}

example

2

I wouldn't use an align* environment. The array environment provides far more flexibility.

enter image description here

\documentclass{article}
\usepackage{amsmath} % for `\text` macro
\begin{document}
\[
\begin{array}{r@{}r}
   & a = 2\\
   & b = 3 \\
+\,& \text{--{}--{}--{}--{}--{}}\\
   & c = 5 
\end{array}
\]
\end{document}

Addendum: Here's how I would address your follow-up formatting query.

enter image description here

\documentclass{article}
\usepackage{amsmath,array}
\newcolumntype{C}{>{{}}c<{{}}}
\begin{document}
\[
\setlength\arraycolsep{0pt}
\begin{array}{r C r @{\;} C}
\text{Item A} &=&   750 \\
\text{Item B} &=&   500 \\
\text{Item C} &=& 1,500 \\
& & \text{--{}--{}--{}--{}--{}} & + \\
\textbf{Total}  &=& \text{\fontseries{b}\selectfont 2{,}750} \\
\end{array}
\]
\end{document}
  • I just updated my question. tks. – guest_5758 Mar 1 '17 at 10:54
  • @guest_5758 - I've posted an addendum to my answer. – Mico Mar 1 '17 at 11:58
  • The addendum version works great! I just didn't expect the code would be that long. I thought it would be as simple as using \cline and + or something like that.. :-) – guest_5758 Mar 7 '17 at 3:04
2

You can use a tabular, with some tricks for making the spaces correct:

\documentclass{article}
\usepackage{mathtools,array}

\begin{document}

\begin{equation*}
\begin{tabular}{@{}l@{}>{${}}c<{{}$}@{}r@{}l@{}}
\text{Item A} &=& 750 \\
\text{Item B} &=& 500 \\
\text{Item C} &=& 1,500\\
\cline{3-3}
&&&\raisebox{1.4ex}[0pt][0pt]{$\;+$}\\[-\normalbaselineskip]
\bfseries\text{Total} &=& \fontseries{b}\selectfont 2,750 \\
\end{tabular}
\end{equation*}

\end{document}

enter image description here

  • 1
    @Mico Of course! – egreg Mar 1 '17 at 11:47

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