Question

2m-7greater than or equal to 13-2m

Answer 1

`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 \\ \\ (4)/(4)\cdot m\geq (20 )/(4)\\ \\m\geq 5`