来自刘凤霞的问题
2(7m-3n)-(8m-5n)去括号再合并同类项,
2(7m-3n)-(8m-5n)去括号再合并同类项,
1回答
2020-01-02 01:27
2(7m-3n)-(8m-5n)去括号再合并同类项,
2(7m-3n)-(8m-5n)去括号再合并同类项,
2(7m-3n)-(8m-5n)
=14m-6n-8m+5n
=6m-n