I am using this:

\documentclass[12pt,letter paper] {article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage[capposition=top]{floatrow}
\usepackage[a4paper,left=25mm,top=25mm,top=25mm,bottom=25mm]{geometry}
\usepackage{amsmath}
\begin{document}

\begin{align*}
{LogTAXREV}_{it} = {\alpha_{0}}+{\beta_{1}LogGDPPC_{it}}
+{\beta_{4}LogAGRIC_{it}}+{\beta_{5}LogSERVICE_{it}}
+{\beta_{6}LogAGE_{it}}+{\beta_{7}LogPOP_{it}}
+{\beta_{8}LogEDUC_{it}}+{\beta_{9}LogGINI_{it}}
\end{align*}

\end{document}


I get this error: Argument of @fileswith@pti@ns has an extra } on the amsmath usepackage and my equation does not split.

• That looks decidedly fishy to me: \usepackage[a4paper,left=25mm,top=25mm,top=25mm,bottom=25mm] Is the geometry package missing? Also not sure about the options for the article class. – Ingmar Feb 11 at 9:16
• As far as I can see you're missing {geometry}. First fix that error. You should also remove all those wrong \emph commands. – egreg Feb 11 at 9:19
• @Ingmar I am using latex first time and I am not sure as well. Let me recheck – J nyaboe Feb 11 at 9:19
• It cant not compile.the \usepackage[a4paper,left=25mm,top=25mm,top=25mm,bottom=25mm] has no argument : {geometry}? \emph make not really sense in math mode. What are you expecting ? – gigiair Feb 11 at 9:39
• @egreg Sorry the {geometry} was a typo. I have corrected that. the equation still not splitting and i am not getting a warning of "overfull box" on the equation. What else can i do? – J nyaboe Feb 11 at 9:39

Line 1: letter paper should be letterpaper, but you can omit it altogether, since you're declaring a4paper later.

Line 2: with a recent release of LaTeX available, this can be omitted.

Line 7: you're missing a trailing {geometry}, which is the cause of the first error you get.

In the main part, all those \emph declarations are wrong. And TeX won't split the long equation for you.

\documentclass[12pt] {article}
%\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage[capposition=top]{floatrow}
\usepackage[a4paper,left=25mm,top=25mm,top=25mm,bottom=25mm]{geometry}
\usepackage{amsmath}

\begin{document}

\begin{align*}
\mathit{LogTAXREV}_{\mathrm{it}} = \alpha_{0}
&+\beta_{1}\mathit{LogGDPPC}_{\mathrm{it}}
\\
&+\beta_{3}\mathit{LogRESOURCE}_{\mathrm{it}}
+\beta_{4}\mathit{LogAGRIC}_{\mathrm{it}}
\\
&+\beta_{5}\mathit{LogSERVICE}_{\mathrm{it}}
+\beta_{6}\mathit{LogAGE}_{\mathrm{it}}
\\
&+\beta_{7}\mathit{LogPOP}_{\mathrm{it}}
+\beta_{8}\mathit{LogEDUC}_{\mathrm{it}}
\\
&+\beta_{9}\mathit{LogGINI}_{\mathrm{it}}
\end{align*}

\end{document}


• This has worked, thank you very much – J nyaboe Feb 11 at 9:56