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Math puzzles in the fourth grade
If there are x people traveling, there are y boats for them to take:

There are five people on each boat, leaving 14 people.

That is to say, the total number of people sitting on each ship plus the remaining 14 tourists: 5y+14 = X. . . . . . . . ①

There are seven people on each boat, so there are four people on one boat, that is, the total number of people going to play is four less, so each boat can meet seven people: 7y-4 = X. . ②

Use ②-①=2Y- 18=0.

In this way, you can get Y=9 (bar), and bring Y=9 into ① formula to get X=59 (person).

In this way, 59 people went to play, one * * *, nine boats.