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(7 + 3i) + (8 + 9i) = (7 + 8) + (3i + 9i) = (7 + 8) + (3 + 9)i = 15 + 12i

Which can also be written as: 15 + 12i = 3(5 + 4i).

Q: What is the sum of (7 plus 3i) plus (8 plus 9i)?

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Just add the real part and the imaginary part separately.

The sum of 7 plus 71 is 77.

SUM means plus 4+7=11

[7 - 3i] To find the conjugate: the sign of the real part stays the same, and the sign of the imaginary part is reversed. So the conjugate of [7 + 3i] is [7 - 3i]

[7 - 3i] To find the conjugate: the sign of the real part stays the same, and the sign of the imaginary part is reversed. So the conjugate of [7 + 3i] is [7 - 3i]

The sum of 3 plus 4 is 7.

The sum is: 8

3 + 7 is an ADDITION sum

14 = 7 + 7

The sum is 1511.

7

negative 4