Answer
$6+3i$
Work Step by Step
Removing the grouping symbols and then adding the real parts and the imaginary parts, the given expression, $
(8+7i)-(2+4i)
,$ simplifies to
\begin{array}{l}\require{cancel}
8+7i-2-4i
\\\\=
(8-2)+(7i-4i)
\\\\=
6+3i
.\end{array}