#### Answer

$2-i$

#### Work Step by Step

Removing the grouping symbols and then adding the real parts and the imaginary parts, the given expression, $
(7-4i)-(5-3i)
,$ simplifies to
\begin{array}{l}\require{cancel}
7-4i-5+3i
\\\\=
(7-5)+(-4i+3i)
\\\\=
2-i
.\end{array}