The ornamental design for a laundrybagframe and bag assembly, as shown and described.
FIG. 1 is a front elevational view of a laundry bag frame and bag showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a left side elevational view thereof, the right side elevational view is not being shown as this view is the mirror image of the left side elevational view.