In this module you can study how to solve equations that take two steps to solve.
The video above from "Mr. Karaba" on YouTube does a good job of explaining how to work through two-step equations.
The above video from Khan Academy shows how to solve equations that have even more than two steps.
When solving an equation, you must perform the same operation to both sides of the equation.
If you subtract 5 from one side on a equation, you must also subtract it from the other side.
Use this search term to find additional resources:
two-step equations
simple equations