3)2/3÷2/4
6)17/2÷14/3
9) 23/3÷11/2​

3) 2/3 divided by 2/4 = 1.33333333333

6) 17/2 divided by 14/3 = 1.82142857143

9) 23/3 divided by 11/2= 0.3484848484848

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: