The number of boys in the dance team is 9/ 14. It tells us that the number of boys in the dance team is 5/ 14 less than that in the chorus, and their total number is the same, that is to say, 1/2 = 5/ 14 less than that in the chorus.
That is, 1/2 of boys in the chorus is equivalent to 5/ 14 of girls in the chorus. After sorting out, 65,438+00/65,438+04 girls in the chorus are equivalent to the number of boys in the chorus and become 65,438+00/65,438+04 girls in the dance team.
Typing is not easy, please give the best if you are satisfied, thank you! I suggest you draw a line drawing.
( 1-2/3)÷( 1-9/ 14)= 14/ 15
This is what I described. Look again!