Answer
$8x+44$
Work Step by Step
Using the Distributive Property and then combining like terms, the given expression, $
9(x+4)-(x-8)
,$ simplifies to
\begin{array}{l}\require{cancel}
9x+36-x+8
\\\\=
(9x-x)+(36+8)
\\\\=
8x+44
.\end{array}