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-42-86i+\left(71+82i\right)
The opposite of -71-82i is 71+82i.
-42+71+\left(-86+82\right)i
Combine the real and imaginary parts in numbers -42-86i and 71+82i.
29-4i
Add -42 to 71. Add -86 to 82.
Re(-42-86i+\left(71+82i\right))
The opposite of -71-82i is 71+82i.
Re(-42+71+\left(-86+82\right)i)
Combine the real and imaginary parts in numbers -42-86i and 71+82i.
Re(29-4i)
Add -42 to 71. Add -86 to 82.
29
The real part of 29-4i is 29.