Question

Simplify the expression below as much as possible.

(4 - 5i ) + (-2 + 3i ) - (1 - 7i )

Answer 1

combine like terms

Answer 2

Think of i as a normal variable...nothing else

Answer 3

get rid of the parentheses

4 - 5i - 2 + 3i - 1 + 7i

now combine the constants

then combine the terms with i