#### Answer

expression;
$-11x+63$

#### Work Step by Step

Without an equal sign, the given is an $\text{
expression
}.$
Using $a(b+c)=ab+ac$ or the Distributive Property and then combining like terms, the given expression, $
5(x+3)-8(2x-6)
,$ simplifies to
\begin{array}{l}\require{cancel}
5x+15-16x+48
\\\\=
-11x+63
.\end{array}