Adding and subtracting complex numbers

Examples
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Lessons
  1. Adding complex numbers
    1. (3+4i)+(9+3i) (3+4i)+(9+3i)
    2. (12−3i)+(−2+2i)+(5i+1) (\frac{1}{2}-3i)+(-2+2i)+(5i+1)
    3. (6−5i)+(−4+7i)+(4i−2) (6-5i)+(-4+7i)+(4i-2)
  2. Subtracting complex numbers
    1. (7+9i)−(5+i) (7+9i)-(5+i)
    2. (1−3i)−(16+2i)−(13−i) (1-3i)-(\frac{1}{6}+2i)-(\frac{1}{3}-i)
    3. (10−12i)−(−4−10i)+2i (10-12i)-(-4-10i)+2i
  3. Adding/subtracting complex numbers graphically
    (2+2i)+(3+i) (2+2i)+(3+i)