从分数的分子和分母中去掉相同的因数，我们称为约分。

We call it reduction to remove the same factors from the terms of a fraction.

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民意测试建立了成为激进分子易攻击对象的索引，这个索引里，分数低于67分的为高危险地。

The poll establishes an index of vulnerability-to-radicalisation, in which any score below 67 indicates high risk.

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在此练习中您要将一个给定的数字转换成一个分数，输入转化结果的分子和分母。不要忘了将结果约分至最简分数。

In this exercise you have to convert a given number into a fraction by entering a numerator and denominator. Do not forget to reduce the result.

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