## Intermediate Algebra (6th Edition)

$\frac{9}{10}\times\frac{x}{2}$
The commutative property of multiplication holds that $a\times b=b\times a$. In this example, we can set $a\times b=\frac{x}{2}\times\frac{9}{10}$. So, $a=\frac{x}{2}$ and $b=\frac{9}{10}$. So an equivalent expression would be $b\times a=\frac{9}{10}\times\frac{x}{2}$.