# How do you simplify #(3+5i)-(6-21)#?

##### 1 Answer

Jul 26, 2016

18 + 5i

#### Explanation:

By the 'usual' method of removing brackets and collecting 'like terms'.

That is : 3 + 5i - (-15) = 3 + 5i + 15 = 18 + 5i