答案1
便宜又简单。
\documentclass[fleqn]{article}
\begin{document}
abc
\[\left.\begin{array}{c}
r1 \\ 1 \\ 1 \\ 1\\ 1 \\
\end{array}\right\}
\raisebox{-1em}{$\left.\begin{array}{c}
r1 \\ 5 \\ 5 \\ 5\\ 5 \\
\end{array}\right\}$}
\raisebox{-2em}{$\left.\begin{array}{c}
r1 \\ 21 \\ 21 \\ 21\\ 21 \\
\end{array}\right\}85$}
\]
or
\[\left.\begin{array}{@{\,}c@{\,}}
r1 \\ 1 \\ 1 \\ 1\\ 1 \\
\end{array}\right\}
\raisebox{-1em}{$\left.\begin{array}{@{\,}c@{\,}}
r1 \\ 5 \\ 5 \\ 5\\ 5 \\
\end{array}\right\}$}
\raisebox{-2em}{$\left.\begin{array}{@{\,}c@{\,}}
r1 \\ 21 \\ 21 \\ 21\\ 21 \\
\end{array}\right\}85$}
\]
\end{document}
答案2
例如,您可以使用宏\matrix
和\lower
TeX 原语:
Make a guess
$$
\def\br#1#2#3#4#5#6{\hbox{$\left.\matrix{#1\cr#2\cr#2\cr#4\cr#5}\right\}#6$}}
\br{r_1}1111{} \lower 1ex\br{r_1}5555{} \lower 2ex\br{r_1}{21}{21}{21}{21}{85}
$$
Try 2.
$$
\def\br#1#2#3#4#5#6{\hbox{$\matrix{#1\cr#2\cr#3\cr#4\cr#4}
\raise1ex\hbox{\kern-.4em$\left.\matrix{\cr\cr\cr\null}\right\}#6$}$}}
\br{r_1}2222{} \lower 1ex\br{r_1}9999{} \lower 2ex\br{r_1}{37}{37}{37}{37}{149}
$$