Question

991es解方程 比如2x+7=9在计算器怎么输入 6(5-y)+13y=89 在计算器怎么输入 在线等

Answer 1

2x+7=9即输入（9-7）/2=就算出来了，6(5-y)+13y=89 也一样，输入：（89-65）/7=即可。

Answer 2

计算器是操作不了这种形式的，只能计算一些运算而不是只能计算。
得自己化解后根据加减乘除运算

Answer 3

用Alpha输入等号（键盘上半的函数区左上角，Alpha下面的那个），然后Shift，Solve（函数区第一个），猜测一个值，按=，等一会儿就会出结果

Answer 4

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Answer 5

用的是专业计算器吗？
如果是 照着输入进去就OK了