Flush equations left with breqn

Question

I am using the breqn package to automatically break equations, like this:

  \begin{dmath}
   a = b + c + d + e + f + g + h +i + j + k + l + m + n + p + q
  \end{dmath}

I would like to have all my equations flushed to the left. However, the option fleqn used as follows:

 \documentclass[fleqn]{article}

does not seem to achieve this (flushing equations to the left) for the breqn provided environments like dmath (though it works with equation). Is there any way to automatically flush all equations to the left while using breqn environments?

MWEs:

\documentclass[fleqn]{article}
\usepackage{amsmath, breqn}
\begin{document}
\noindent Test is there.
\begin{equation*}
   a = b + c + d + e + f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+      f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f 
\end{equation*}
\noindent Test is here.
\end{document}

The above flushes the equation to the left, but the following does not flush left.

\documentclass[fleqn]{article}
\usepackage{amsmath, breqn}
\begin{document}
\noindent Test is there.
\begin{dmath*}
   a = b + c + d + e + f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+      f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f+ f 
\end{dmath*}
\noindent Test is here.
\end{document}

Answer 1

Set mathindent to be zero.

\documentclass[fleqn]{article}
\usepackage{breqn,showframe}             %% showframe only for showing frames.
\begin{document}
\setlength{\mathindent}{0pt}
  \begin{dmath}    
   a = b + c + d + e + f + g + h +i + j + k + l + m + n + p + q
  \end{dmath}
\end{document}