[tex]-3m-2(5m+2)=-69\ \ \ |\text{use distributive property}\\\\-3m-2(5m)-2(2)=-69\\\\-3m-10m-4=-69\\\\-13m-4=-69\ \ \ \ |+4\\\\-13m=-65\ \ \ \ \ |:(-13)\\\\\boxed{m=5}[/tex]
