In x=1 you can puzzle your way though equations build with the basic arithmetic operations and brackets.
Puzzle as long as you like to learn the mathematical principles - then test your skills against other players for the fastest way to solve an equation.
Enjoy math without annoying advertising or in-app purchases. You can, though, donate a small amount, if you really want to.
Mathematical regards,
the latest updates optimizes the gameplay on tablets.
Please tell me any problem you see, so I can fix it as soon as possible: https://twitter.com/xgleich1