# Rename Equations to 14a and 14b but keep ordering

I have Equations 11, 12, 13 and so on. I want the next equations to be 14a and 14b, but the one after should again be 15, i.e., keep the ordering. I know how to tag equations, but then the equation after 14b would become 14 again. Here's a ME:

 \documentclass{revtex4-1}

\usepackage{amsmath}

\begin{document}
\begin{widetext}% I need this widetext thing.
\begin{subequations}
$$1 = 1$$
\end{widetext}
The above equation should have (14a) as a label. Now come the next equation which should have label 14b. And the one following that should have label (15).
\begin{widetext}
$$\sin x = 1$$
\end{subequations}
\end{widetext}
Now next equations should have a label (15).
\end{document}

• Hi. Have you seen subequations environment from the package amsmath? I think it can help you with what you need. – yo' Jun 4 '15 at 20:13
• Yes but the equations are far apart i.e. a lot of text in between them. – Your Majesty Jun 4 '15 at 20:14
• That shouldn't matter. Would you please provide a minimal example showing your situation? – yo' Jun 4 '15 at 20:16
• @LoveLearning Just begin subequations before the paragraph containing equation 14a and end it after the paragraph containing equation 14b. – egreg Jun 4 '15 at 20:16
• Related/duplicate: How to reference equations using letters and numbers – Werner Jun 4 '15 at 20:22

Just reordering the position of the place where \begin{subequations} and \end{subequations} appear as the below example solves the problem:

 \documentclass{revtex4-1}
\usepackage{amsmath}

\begin{document}
\begin{subequations}
\begin{widetext}% I need this widetext thing.
$$1 = 1$$
\end{widetext}
The above equation should have (14a) as a label. Now come the next equation
which should have label 14b. And the one following that should have label (15).
\begin{widetext}
$$\sin x = 1$$
\end{widetext}
\end{subequations}
Now next equation **will** have a label (15). :D
\end{document}