How do you patch a bike tire to fix a puncture?

To patch a bike tire and fix a puncture, first remove the wheel from the bike. Locate the puncture by inflating the tire and listening for the hissing sound. Use a tire lever to remove the tire from the rim. Find the puncture and roughen the area with sandpaper. Apply rubber cement and place a patch over the puncture. Press down firmly and let it dry before reassembling the tire and wheel. Inflate the tire and check for leaks.