As nikitarama said use a segment to define the various pages you want specified in report.
Then you can use a report like Key metrics report. Lets say pageviews and Unique visitors. When the segment is used here, you will get 1 line item that reports on those metrics but its made up of multiple pages in your segment.
You'll want to create a segment, then use the segment as a dimension. You should be able to get the data you're looking for there. Just keep in mind that would be the only line item on the table, unless you dragged other segments below it.