答案1
\documentclass{article}
\usepackage{amsmath}
\begin{document}
{\setlength\abovedisplayskip{0pt}
\noindent\textbf{Year 1:}
\begin{align*}
\$1000 + 0.05(\$1000)& = \$1000(1 + 0.05)\\
& = \$1000(1.05)\\
& = \$1050
\end{align*}
\bigskip
\begin{align*}
\intertext{\textbf{Year 1:}}
\$1000 + 0.05(\$1000)& = \$1000(1 + 0.05)\\
& = \$1000(1.05)\\
& = \$1050
\end{align*}
}
\end{document}
(问题更新后有新答案)