Which property of equality would be used to isolate the variable x in this equation? x – 8 = 14

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?