Solving for x has been an essential aspect of mathematical education and practice for centuries. The solution to every equation or expression is dependent on finding the value of this mysterious x.

iOS/Android/Desktop: Default calculator apps suck. They work like a traditional handheld calculator, which only displays one value at a time and can only do basic math. If you want to do anything more ...

Every so often it's good to exercise your brain with a math problem or two that forces you to recall principles you learned decades prior. As elementary as it might feel, you'd be surprised how easy ...