Question

please answer... this attachment ☝️☝️☝️​

Answer 1

Answer:

-8/3

Step-by-step explanation:

$3^{x-1} = 9\\\\3^{2} = 9$

Therefore,

$3^{x-1} = 3^{2}$

As bases are equal we can equate the powers

x-1= 2

x= 3

$4^{y+2} =64\\\\4^{3}= 64$

Therefore,

$4^{y+2} = 4^{3}$

Since bases are equal we can equate the powers

y+2=3

y=1

$\frac{y}{x} -\frac{x}{y} \\=\frac{1}{3} -\frac{3}{1} \\= \frac{-8}{3}$