my guess is that the real part is -6 while the imaginary part is 2i
my guess is -4 + 11i
my guess for this one is 14-2i
1) is correct
2) don't guess
(-3 - i) + (5+6i) = (-3+5) + (-1+6)i = 2+5i
3) your guesses.... are not good
(8-3i)-(6+i) = (8-6) + (-3-1)i = 2 - 4i
+642 
