/a>
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<p><a href="https://mountainmath.github.io/tongfen/index.html"><img src="https://raw.githubusercontent.com/mountainMath/tongfen/master/images/tongfen-sticker.png" alt="tongfen logo" align="right" width="25%" height="25%"></a> TongFen (通分) means to convert two fractions to the least common denominator, typically in preparation for further manipulation like addition or subtraction. In English, that’s a mouthful and sounds complicated. But in Chinese there is a wor