Answer:
Step-by-step explanation:
1.)
7 - 3i - 6 - 4i
Combine like terms
1 - 7i
Cant do anything else
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2.)
5 + 4i - 9 - i
Combine like terms
- 4 + 3i
Can't do anything else
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3.)
5i - 3 - 7 + 2i
7i - 10
Can't do anything else
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4.)
9i + 3 - 4 + 3i
12i - 1
Cant do anything else
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Hope this helped!
Have a supercalifragilisticexpialidocious day!
