[tex]7 + 2x = 4x - 5 \\ \\ 7 = 4x - 5 - 2x \ / \ subtract \ 2x \ from \ each \ side \\ \\ 7 = 2x - 5 \ / \ simplify \\ \\ 7 + 5 = 2x \ / \ add \ 5 \ to \ each \ side \\ \\ 12 = 2x \ / \ simplify \\ \\ \frac{12}{2} = x \ / \ divide\ each \ side \ by \ 2 \\ \\ 6 = x \ / \ simplify \\ \\ x = 6 \ / \ switch \ sides \\ \\ Answer: \fbox {x = 6}[/tex]
