Evaluate
-63-60i
Real Part
-63
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3\left(-21-20i\right)
Add -1 and 4 to get 3.
3\left(-21\right)+3\times \left(-20i\right)
Multiply 3 times -21-20i.
-63-60i
Do the multiplications.
Re(3\left(-21-20i\right))
Add -1 and 4 to get 3.
Re(3\left(-21\right)+3\times \left(-20i\right))
Multiply 3 times -21-20i.
Re(-63-60i)
Do the multiplications in 3\left(-21\right)+3\times \left(-20i\right).
-63
The real part of -63-60i is -63.
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