If you're seeing this message, it means we're having trouble loading external resources on our website.

如果你被网页过滤器挡住,请确保域名*.kastatic.org*.kasandbox.org 没有被阻止.

主要内容

嵌套的分数

问题

哪一个表达式等效于 start fraction, start fraction, 2, x, divided by, y, end fraction, plus, 1, divided by, start fraction, 2, y, divided by, x, end fraction, minus, 1, end fraction ?
假设 x, does not equal, 0, y, does not equal, 0, 和 x, does not equal, 2, y.
选出正确答案:
不会做了?
不会做了?