What is the LaTeX code for this mathematical expression?

Question

What is the LaTeX code for this image? Please help!

Possible duplicate of Image equation to TeX – Henri Menke Dec 03 '18 at 09:00 — Henri Menke, Dec 03 '18 at 09:00

score 20 · Accepted Answer · 2018-12-03T09:59:52.140

20

Welcome to TeX.SX! This is a simple answer, however, you should check the commands and packages specifically for the addition / multiplication / etc. on TeX.SX.

\documentclass{article}
\begin{document}
\[
\begin{array}{rr}
       A & B \\
    +\ 3 & 7 \\
    \hline
       9 & A
\end{array}
\]
\end{document}

edited Dec 03 '18 at 09:59

answered Dec 03 '18 at 07:24

1

(+1) for using the delimeters ;) – Raaja_is_at_topanswers.xyz Dec 03 '18 at 09:45
1

In the original question, the $A\ B$ in the first line were right of the other two lines. I suspect (supported by the acceptance) that was not required. +1. – Ross Millikan Dec 04 '18 at 04:30
@Raaja: presumably the delimiters you mention are the square brackets. I haven't seen them. What do they do? – Ross Millikan Dec 04 '18 at 04:31
@RossMillikan Well, here what I mean by delimeter is that using a \ instead of a not-so-nice tab space using &. – Raaja_is_at_topanswers.xyz Dec 04 '18 at 06:49

score 7 · Answer 2 · answered Dec 03 '18 at 07:30

7

I would do:

\documentclass{article}
\begin{document}
\begin{center}\renewcommand{\tabcolsep}{.3ex}\renewcommand{\arraystretch}{.9}
\begin{tabular}{ccc}&$A$&$B$\\ +&$3$&$7$\\ \hline&$9$&$A$
\end{tabular}\end{center}
\end{document}

answered Dec 03 '18 at 07:30

José Carlos Santos

4,803

Fran · Answer 3 · 2018-12-03T10:16:19.500

6

Another approach with xlop:

\documentclass[12pt]{article}
\usepackage{xlop}
\begin{document}
\oplput(1,2){A}\oplput(2,2){B}
\oplput(0,1.5){$+$}
\oplput(1,1){3}\oplput(2,1){7}
\ophline(0,0.8){4}
\oplput(1,0){9}\oplput(2,0){A}
\end{document}

To show also the solution you only need add some like \vspace{1em}\opadd{59}{37}

edited Dec 03 '18 at 10:16

answered Dec 03 '18 at 09:34

Fran

80,769

1

I think 58+37=95 is the solution of the addition, not 59+37 :) – Dec 03 '18 at 13:23
2

@DũngVũ With or without taking the last carry? Because then A=5+1 and 59+37 is correct ... Ok, it was just messing, really it was only a typo... ;) – Fran Dec 03 '18 at 14:27

What is the LaTeX code for this mathematical expression?

3 Answers3