Given 2x+y=6 perform the necessary operations to put equation into the proper general form. explain in complete sentences how you knew that the equation was a proper general form

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.