Unknown Type
Khan Academy

Khan Academy: Equations With One Rational Expression

For Students 9th - 10th Standards
Solve equations that have one rational expression whose numerator and denominator are linear expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Interactive
University of Waterloo (Canada)

University of Waterloo: Math Frog: Solving Equations 2

For Students 6th - 8th
Race against the clock to see how many simple equations you can solve correctly in three and a half minutes.