How to fix this?

Question

I want to edit the problem of equal signs to be under each other.

this code to me is perfect, so what would it be the problem.

Don't use eqnarray. Use align from amsmath. Also, I think you can't wrap eqnarray in equation. — Phelype Oleinik, Jan 11 '20 at 22:00
Welcome to TeX.SE!¨ Please provide code of your equation, not its image which we need to retype :-(. The best in form of MWE (Minimal working Example, a small complete document, which we can compile as it is). Something like thi: `\documentclass{article} \usepackage{amsmath}
\begin{document} \begin{align} a & = b+c \ & = 2+2 \end{align} \end{document}` — Zarko, Jan 11 '20 at 22:07

score 1 · Accepted Answer · answered Jan 12 '20 at 01:07

You can also use split math environment:

\documentclass{article}
\usepackage{amsmath}

\begin{document}
    \begin{equation}
\begin{split}
e_{0,1} & = \left(x,y\right)_{w(x)}, \\
        & = \left(x,y\right)_{w(x)}.
\end{split}
    \end{equation}
\end{document}

TCHassna Taha · Answer 2 · 2020-01-11T23:49:35.770

0

This is the modified code:

\begin{equation}
\begin{aligned}
e_{0,1} & = \left(x,y\right)_{w(x)}. \\
        & = \left(x,y\right)_{w(x)}.
\end{aligned}
\end{equation}

This is its nice output.

@Phelype Oleinik thanks, sir. Thanks, everyone.

edited Jan 11 '20 at 23:49

answered Jan 11 '20 at 22:37

TCHassna Taha

29

3

align inside equation is not correct. Use aligned instead. – Sigur Jan 11 '20 at 22:41
1

Also, for simple x,y you don't need \left \right. Use simply (x,y). – Sigur Jan 11 '20 at 22:42
Paste the code as code, not as image. Also, what @Sigur wrote: either only align either aligned within equation. – ivankokan Jan 11 '20 at 22:46
the best is to do what @Sigur said because no errors appeared, but the bracket's cases are optional. – TCHassna Taha Jan 11 '20 at 22:52
@TCHassnaTaha, depends if you want a single number centered vertically or two numbers, one for each equation. If you want the last, simply use align only. – Sigur Jan 11 '20 at 22:55
'aligned' equal signs under each other but 'aligned*' all at the same line. in both cases, there is one number. – TCHassna Taha Jan 11 '20 at 23:34
from where on the keyboard I can type the brackets of the code? I hope my question is clear. – TCHassna Taha Jan 11 '20 at 23:38
align i guess i found it, thanks anyway. – TCHassna Taha Jan 11 '20 at 23:43
but why align sometimes is right under equation environment? – TCHassna Taha Jan 11 '20 at 23:52

How to fix this?

2 Answers2