Final answer:
To subtract complex numbers, we subtract the real parts and the imaginary parts separately.
Step-by-step explanation:
To subtract complex numbers, we subtract the real parts and the imaginary parts separately. So in this case, (-8-6i) - (7-4i) = -8 - 7 - (6 - (-4))i = -15 - 2i. Therefore, the difference is -15-2i.
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