方程
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∵
+1 x
-1 y
=1 xy2
，3 4
∴
=x+y xy
，3xy2+4 4xy2
∵xy≠0，
∴4y（x+y）=3xy2+4，
∴x=
，4(y2-1) 3y2-4y
∵x和y都是整数，
∴
是整数，4(y2-1) 3y2-4y
当y=2时，x=3，
当y=3时，x是不整数，
验证得除x=3、y=2时，没有其他满足条件的x和y的值，
故答案为（3，2）．
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| April 27th is a special day in Britain. It's called "Take Our Daughters to Work Day". It was 1 to Britain in 1994 from America. On that day thousands of girls take a day 2 school and go with one of their parents to their work places. By doing this, it can 3 girls more about the society where they live. Now the girls can have a close look at 4 their parents are doing. This may help them to be calmer when they have to choose a 5 . Mary experienced a day of work at her mother's office. This helped her 6 her mother's work better. She said that this made her feel more confident about her future. Schools and many companies 7 the activity, too. Some schools 8 make the day a necessary part of school life. Experts think that girls with more self-confidence are more likely to be 9 than common girls. 10 parents can set good examples both at work and at home for them, they will do better than others. Take Our Daughters to Work Day is surely a step in the right direction. | |||
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