2m-7greater than or equal to 13-2m
\(2m-7 \geq 13-2m \ \ |+2m\\ \\ 2m+2m-7 \geq 13-2m+2m \\ \\4m-7\geq 13 \ \ |+7 \\ \\4m-7 +7\geq 13+7\\ \\4m\geq 20 \ \ / :4 \\ \\ \frac{4}{4}\cdot m\geq \frac{20 }{4}\\ \\m\geq 5\)
