使用对齐或聚集使方程之间的间距相等

Question

有没有办法使有分数和无分数的等式之间的间距相等？

\documentclass{article}
\usepackage{amsmath}

\begin{document}
\begin{section}{title}
text
    \begin{gather}
    a + b + \frac{1}{2} = 1 \\
    a + b + \frac{1}{2} = 1 \\
    a + b + c = 1 \\
    a + b + c = 1
    \end{gather}
\end{section}
\end{document}

Answer 1

我会使用，\tfrac这样它就适合，或者你可以通过增加来扩展方程式\jot

\documentclass{article}
\usepackage{amsmath}

\begin{document}
\begin{section}{title}
text
    \begin{gather}
    a + b + \frac{1}{2} = 1 \\
    a + b + \frac{1}{2} = 1 \\
    a + b + c = 1 \\
    a + b + c = 1
    \end{gather}
text
    \begin{gather}
    a + b + \tfrac{1}{2} = 1 \\
    a + b + \tfrac{1}{2} = 1 \\
    a + b + c = 1 \\
    a + b + c = 1
    \end{gather}
text
\setlength\jot{12pt}
    \begin{gather}
    a + b + \frac{1}{2} = 1 \\
    a + b + \frac{1}{2} = 1 \\
    a + b + c = 1 \\
    a + b + c = 1
    \end{gather}
\end{section}
\end{document}