Respuesta :
hello :)
so you must first understand that 3/4 is the same as 6/8 (just multiply the top and bottom by 2!)
so if you take away 3/8 from 6 6/8 (remember 6/8 is the same as 3/4)
then the resulting amount og rope you would have would be 6 3/8 ft
i hope this help plz vote me for brainliest :)