please help with this question.

Answer:
[tex]\frac{y}{8}[/tex]
Step-by-step explanation:
Given
[tex]\frac{x}{y}[/tex] = [tex]\frac{5}{8}[/tex] ( cross- multiply )
8x = 5y ( divide both sides by 5 )
[tex]\frac{8x}{5}[/tex] = y ( divide both sides by 8 )
[tex]\frac{x}{5}[/tex] = [tex]\frac{y}{8}[/tex]