\left\{
\begin{array}{l}
x+y=4 \\ x-y=2
\end{array}
\right.
latex 不等式组
最新推荐文章于 2025-04-27 20:07:14 发布
\left\{
\begin{array}{l}
x+y=4 \\ x-y=2
\end{array}
\right.