A basic algebra equation has left people divided over the correct process for solving it, with two methods resulting in two completely different answers.

The basic reason why math fact fluency matters, cognitive scientists say, is that it frees up brainpower or working memory to do more complex mathematical work—like figuring out how to structure ...

"This is a dramatic revision of a basic chapter in algebra," Wildberger said. Like this article? For more stories like this, follow us on MSN by clicking the +Follow button at the top of this page.