Simplify -12+48i+(15+21i)

$- 12 + 48 i + (15 + 21 i)$

Step 1

Simplify the expression.

Remove parentheses.

$- 12 + 48 i + 15 + 21 i$

Add $- 12$ and $15$ .

$3 + 48 i + 21 i$

Step 2

Add $48 i$ and $21 i$ .

$3 + 69 i$