2+2=4. Free math puzzle game

When was the last time you calculated 7x8 without calculator? Do you know a solution for this equation: X+X=4? Is it a 2+2=4 or it can be something else? Try this new math game, where you need to solve a set of equations with shared variables knowing only a correct result! Features: - 3 game modes: 2x2, 2x3, 3x3. - Free hints to help you solve a puzzle. - Puzzle statistics. - Leaderboards and Achievements.