I'm trying to figure out how to align the equals sign with the rest of the equals on the last line. Unfortunately, I get the offset alignment you can see in the image below. Any recommendations on how to get things aligned around the &=
for the final line?
\usepackage{amsmath}
\usepackage{bm}
\makeatletter
\renewcommand{\boxed}[2][\fboxsep]{{
\setlength{\fboxsep}{#1}\setlength{\fboxrule}{0.8}\fbox{\m@th$\displaystyle#2$}}}
\makeatother
\begin{equation*}
\begin{split}
26(x-14)-23(x-14)&=39\\
26x-364-23x+322&=39\\
3x-42&=39\\
3x&=81\\
\\
\boxed[10]{\mathbf{\therefore x&=27}}
\end{split}
\end{equation*}
Best Answer