如何将“服从...”与顶部的最小化字对齐

Question

我如何将“服从...”与顶部的最小化词对齐。

Answer 1

aligned在环境中嵌入环境align*可以完成工作：

\documentclass{article}
\usepackage{amsmath} 
\begin{document}
\begin{align*}
&\text{minimize } \sum_{i=1}^k y_i \\
&\text{subject to the modified constraints} \\
&\qquad\qquad
\begin{aligned}
\mathbf{x} &\ge 0 \\
s_i &\ge 0 \text{ for slack and surplus variables}\\
y_i &\ge 0 \text{ for artificial variables}
\end{aligned}
\end{align*}
\end{document} 

Answer 2

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath}

\begin{document}
\[{\scriptscriptstyle\text{minimize}} \sum_{i=0}^{n} \frac{a_i}{1+x}\]
\end{document}

Answer 3

有表格吗？

\documentclass[12pt,a4paper]{report}
\usepackage{amsmath}

\begin{document}
    \begin{tabular}{llcl}
        minimize & \multicolumn{3}{l}{$\sum_{i=1}^{k} y_i$}\\
        \multicolumn{4}{l}{subject to Modified Constraints}\\
        & $x$ & $\geq$ & $0$\\
        & $s_i$ & $\geq$ & $0$ for slack\ldots\\
        & $y_i$ & $\geq$ & $0$ for\ldots
    \end{tabular}
\end{document}