I've revamped our original equation solver to include inequalities and multiple variable terms and constants.
Limitations are no powers are allowed, and only one variable [a-z] is allowed. This comes complete with a quiz generator, shortcut commands, and a practice problem generator. If what you enter is an inequality, the calculator will link to the interval notation representation at the end of the calculation.
The following are examples of what the calculator can handle including the shortcut commands: