Eight out of nine and five out of six

Eight out of nine and five out of six

8 out of 9 = (9 × 2) = (8 × 2) = 16 out of 18
5 out of 6 = (6 × 3) = (5 × 3) = 15 out of 18

How to divide 4 out of 7 and 6 out of 13?

4 / 7 = 52 / 91 (numerator and denominator multiplied by 13)
6 / 13 = 42 / 91 (numerator and denominator multiplied by 7)
If you don't understand this question, you can ask,

7 / 13 and 5 / 11, 1 / 15 and 2 / 29, 11 / 12 and 14 / 15, 17 / 23 and 15 / 27, respectively
Brothers and sisters,

7 / 13 = 1-6 / 13 5 / 11 = 1-6 / 11 because 6 / 13 is less than 6 / 11, 7 / 13 is greater than 5 / 11
1 / 15 numerator and denominator multiplied by 2 = 2 / 30 is less than 2 / 29, so 1 / 15 is less than 2 / 29
The third and fourth formulas are compared in the same way as the first one
This question examines the law that if the numerator is the same and the denominator is large, the denominator is small