请帮我解决一下这道数学题英语

　　solve的例句：

　　She tried her best to solve the problem.

　　她尽了最大的努力解决这个问题。

　　Attempts are being made to solve the problem of waste disposal.

　　正在想办法解决废物处理的问题。

　　This won't solve the problem but it's a step in the right direction.

　　这虽不能解决问题，却是朝正确方向迈出的一步。

　　It is questionable whether this is a good way of solving the problem.

　　这未必是一个解决问题的好办法。