Get more lessons like this at http://www.MathTutorDVD.com In this lesson you will learn how to solve one step equations in algebra using addition and subtractions. In order to solve a single step equation, we must isolate the variable (usually x) on one side of the equal sign. In order to do this, we do the opposite math operation. For example if x is added to something on the left, we perform subtraction to get the variable by itself on one side of the equal sign. These types of equations can be solved with a single step, which is why they are called one step equations.