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

Updated: 4/28/2022

Wiki User

8y ago

(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).

Wiki User

8y ago

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

negative 4