Chapter R - Section R.3 - Exponents, Roots, and Order of Operations - R.3 Exercises - Page 30: 68

$-5$

Using order of operations and the concepts of the absolute value of a number, the given expression, $ (-6-3)|-2-3|\div9 ,$ simplifies to \begin{array}{l}\require{cancel} (-9)|-5|\div9 \\\\= (-9)(5)\div9 \\\\= -45\div9 \\\\= -5 .\end{array}