Nine Chapters on Mathematical Art, Vol. 1

The method states: Multiply the width and length in li to obtain the area in li, then multiply by 375 to get the number of mu. Note: According to this method, multiplying the width and length in li gives one area in li. One square li is an area of one square li, which is 64,800 square bu. Dividing by 240 bu for one mu gives 375 mu. Therefore, by multiplying by this, one immediately obtains the number of mu. One square li contains 3 qing and 75 mu.

Now, there is 12/18. How much is it when reduced?

There is also 49/91. How much is it when reduced?

Reducing Fractions

Note: Reducing fractions is for when the quantity of an object cannot be expressed as a whole number and must be expressed in fractions. If the fractions are complex, they are difficult to use. For example, 2/4, if expressed in a complex way, could also be 4/8; if reduced, it is 1/2. Although the terms are different, in terms of