#1**+1 **

We can turn this problem into a subtraction problem: (2+7i) - (3-5i).

Since the order of subtraction/addition problems don't matter (a+b=b+a and a-b=-b+a), we can turn the problem into: (2-3) + (7i - -5i)

Subtracting a negative number is like adding the positive version of it: (2-3) + (7i+5i)

Doing the parts individually, 2-3 = -1 and 7i+5i = 12i.

Finally, we can combine them and our solution is -1 + 12i or 12i - 1.

I hope this helped :)

Guest Dec 28, 2020

edited by
Guest
Dec 28, 2020