Tyler Wallace's "Beginning and Intermediate Algebra: Section 1.1: Solving Linear Equations - One Step Equations"
Read this section, beginning on page 28, to learn how to solve "one step equations."
Click https://s3.amazonaws.com/saylordotorg-resources/wwwresources/site/wp-content/uploads/2011/12/SAYLOR-MA001-TEXT.pdf link to open resource.