fxSolver fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve.“
Microsoft Math A free app to help with school math problems
Mathway Mathway is a freemium math solving app that helps you find the solutions to any math problem you can imagine.
Photomath Photomath is a mobile app that will give you the ability to test your equations through a simple calculator interface that will fully explain the solution in a step-by-step fashion. Read more about Photomath
WolframAlpha WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.