Jackson visits the county fair and has a total of 48 tickets. Every ride at the fair costs four tickets. At the end of the day he has 16 tickets left. Set up and solve an equation to represent how many rides he went on. Use 'r' to represent the number the rides.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.