Evaluate
-15+13i
Real Part
-15
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15+\left(4-\left(-9\right)\right)i
Subtract 15-9i from 4i by subtracting corresponding real and imaginary parts.
-15+13i
Subtract -9 from 4.
Re(15+\left(4-\left(-9\right)\right)i)
Subtract 15-9i from 4i by subtracting corresponding real and imaginary parts.
Re(-15+13i)
Subtract -9 from 4.
-15
The real part of -15+13i is -15.
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Limits
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