Here's how we solve a two step equation. It begins with the concept of equality: what we do to one side of the equation must be done to the other.
Two-step equations is a free educational video by Khan Academy.It helps students in grades 9,10,11,12 practice the following standards HSA.REI.B.3.
1. HSA.REI.B.3 : Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters.