Sal Khan, Monterey Institute for Technology and Education
This tutorial is for you if you already have the basics of solving equations and are looking to put your newfound powers to work in more examples. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.
Read this work at the World Public Library (library card needed).