2/5 3/2 2/3 3/8 5/8 3/5 5/3 1/9

9 * 1/3 = 3L 280 * 3/5 = 168 3/4-2/5 = 7/20 14 * 20/7 = 40m

The unit wrote it by itself, but do your homework! It seems that I have given you all the answers, and I am a little sorry for you. ........

2/5 is 2/5, understand?

Let me talk about the last question.

If 1/3 is used, then the total length is1* * 4, and if it is used as 3, it is concluded that it accounts for 3/4 of the total length. Excluding the first time, * * * leaves 7/20, and then uses the transformation strategy to convert it into 20/7, and then multiplies it to find the total length.