Question

se x=2/3 e y=3/4,entao a razao y/x vale:

Answer 1

x= 2/3 
y= 3/4

y/x = (3/4)/(2/3)

3/4 * 3/2 = 9/8

y/x = 9/8

Answer 2

Temos que:

$\dfrac{\dfrac{3}{4}}{\dfrac{2}{3}} = \dfrac{3}{4}\cdot\dfrac{3}{2} = \dfrac{9}{8}$

Portanto, a razão $\dfrac{\dfrac{3}{4}}{\dfrac{2}{3}} = \dfrac{9}{8}$

Espero ter ajudado.