I have multiple equations with different labels (see below for MWE) that I would all like to align while being able to reference them separately. I have the following code:
\documentclass{article}
\usepackage{mathtools}
\begin{document}
Equation \ref{eq:p1_m1} tests one model, equation \ref{eq:p1_m2} the extended model model and equation \ref{eq:p1_m3} a third one.
\begin{align} \label{eq:p1_m1}
ABC\textsubscript{n} &= \alpha\textsubscript{0} + \alpha\textsubscript{1} E\textsubscript{ij} + \alpha\textsubscript{2} E\textsubscript{ij} * F\textsubscript{i} + \varepsilon\textsubscript{i}
\end{align}
\vspace{-.25cm}
\begin{align} \label{eq:p1_m2}
ABC\textsubscript{n} &= \alpha\textsubscript{0} + \alpha\textsubscript{1} E\textsubscript{ij} + \alpha\textsubscript{2} E\textsubscript{ij} * F\textsubscript{i} \nonumber \\
& \quad + \alpha\textsubscript{3} \Delta\textsubscript{G\textsubscript{ij}} + \varepsilon\textsubscript{i}
\end{align}
\vspace{-.25cm}
\begin{align} \label{eq:p1_m3}
ABC\textsubscript{n} &= \alpha\textsubscript{0} + \alpha\textsubscript{1} E\textsubscript{ij} + \alpha\textsubscript{2} E\textsubscript{ij} * F\textsubscript{i} \nonumber \\
& \quad + \alpha\textsubscript{3} \Delta\textsubscript{G\textsubscript{ij}} + \alpha\textsubscript{4} E\textsubscript{ij} * G\textsubscript{nt} \nonumber \\
& \quad + \alpha\textsubscript{5} E\textsubscript{ij} * F\textsubscript{i} * G\textsubscript{nt} + \alpha\textsubscript{6} \Delta\textsubscript{G\textsubscript{ij}} * G\textsubscript{nt} + \varepsilon\textsubscript{i}
\end{align}
\end{document}
I would like (i) the equations to all align on the equal
sign and (ii) be able to reference them as shown in the text. Additionally, I would like to be able to align all the \varepsilon
signs in their respective columns.
Can someone help me out and point me in the right direction?