#### Answer

$-2m+6$

#### Work Step by Step

$\bf{\text{Solution Outline:}}$
Use the Distributive Property to simplify the given expression, $
-2(m-3)
.$
$\bf{\text{Solution Details:}}$
Using the Distributive Property which is given by $a(b+c)=ab+ac,$ the expression above is equivalent to
\begin{array}{l}\require{cancel}
-2(m)-2(-3)
\\\\=
-2m+6
.\end{array}