[tex]2x + 3 (2 - x) = 15 - 4x\\2x+6-3x = 15-4x\\-x+6 = 15-4x \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ /+4x\\3x +6 = 15 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ / -6\\3x = 9 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ / :3\\\boxed{x = 3}[/tex]
