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| Question 1020794:  There are 3 complex numbers a+bi, c+di, and e+fi. If b=3, e=-a-c, and the sum of the numbers is 2i, find d+f.
 Answer by robertb(5830)
      (Show Source): 
You can put this solution on YOUR website! From the given, a+bi = a+3i, and e+fi = a-c+fi.  Together with c+di, their sum is 2a+(3+d+f)i.  This sum is supposed to be equal to 2i. Therefore, a = 0 and 3+d+f = 2, and by transposition,
 
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