“微信扫一扫”进入"可可试卷"微信小程序刷题
初中数学七年级下册（573题）
{x - y = 4} \\
{2x + y = 5}
\end{array}} \right.\)
知识点：第八章 二元一次方程组
参考答案：\(\left\{ {\begin{array}{*{20}{l}}
{x = 3} \\
{y = - 1}
\end{array}} \right.\)
“微信扫一扫”进入"可可试卷"微信小程序刷题
{x - y = 4} \\
{2x + y = 5}
\end{array}} \right.\)
参考答案：\(\left\{ {\begin{array}{*{20}{l}}
{x = 3} \\
{y = - 1}
\end{array}} \right.\)