Question

v/w = 9 for w 

Please note that the dash between v and w means the fraction sign

Answer 1

$\frac{v}{w}=9 \to\boxed{w=\frac{v}{9}}$

Answer 2

$\frac{v}{w}=9|\cdot w\\ v=9w|:9\\ w=\frac{v}{9}$