Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$-4-5i$
Removing the grouping symbols and then adding the real parts and the imaginary parts, the given expression, $(5-3i)-(9+2i) ,$ simplifies to \begin{array}{l}\require{cancel} 5-3i-9-2i \\\\= (5-9)+(-3i-2i) \\\\= -4-5i .\end{array}