Question 181595
(-6+12i)+(4-i)

You cobine the Real Number parts and you cobine the imaginary number parts:

= (-6+4) + (12i - i)

= -2 + 11i

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Ifyou were subtracting it would go like this:
(-6+12i)-(4-i)

= (-6-4)+(12i + i)

= -10 + 13i

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Cheers
Stan H.