Algebra is one of the most complex subjects of study. It is also the basis for many more difficult levels of study, like engineering, physics, business and even culinary arts. As a math tutor of mainly Algebra students, I have learned that most students have not mastered specific basics of Pre-Algebra and therefore are left stuck on more complex Algebra problems. Always remember that math builds on itself, so what you learn in the past will be used for learning something on the next level.