Find $\frac{2}{3}u,3v,v-u,$ and $2u5v.$

$u=($:$8,3$:$),v=($:$7,-2$:$)$

$($a$)\frac{2}{3}u$

$$

$($b$)3v$

$$

$($c$)v-u$

$$

$($d$)2u5v$

$$