## Intermediate Algebra (6th Edition)

$10.8mn-4.8m$
We are given the expression $1.2m(9n-4)$. The distributive property holds that $a(b-c)=ab-ac$. $a=1.2m$, $b=9n$, and $c=4$ $a(b-c)=1.2m(9n)-1.2m(4)=10.8mn-4.8m$