Simplify the given expression:
(6 + 2i) − (8 − 3i)

(6 + 2i) − (8 − 3i)

Remove parentheses in the second term:    (6 + 2i) − 8 + 3i

Remove parentheses in the first term:          6 + 2i − 8 + 3i

Combine the ' i ' terms:                               6 - 8 + 5i

Combine the numerical terms:                    -2 + 5i 

That's about as simple as it can get.