The ornamental design for a combinedsteamer and blender, as shown and described.
1.1 is a perspective view showing the combined steamer and blender of my design;
1.2 is a front elevational view thereof;
1.3 is a rear elevational view thereof;
1.4 is a right side elevational view thereof;
1.5 is a left side elevational view thereof;
1.6 is a top plan view thereof; and
1.7 is a bottom plan view thereof.
The portions of the combined steamer and blender shown in broken lines are included for the purpose of illustrating unclaimed portions of the combined steamer and blender and form no part of the claimed design.