HELP PLS I am failing!! Will mark brainiest show your work!

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!
Answer:
1. is 7-3i-(6-4i)= 1+i
2. is 5 + (4 * i) - (9 - i) = -4+5i
3. is (5 * i) - 3 - (7 + (2 * i)) = -10+3i
4. is (9 * i) + 3 - (4 + (3 * i)) = -1+6i
trust me guys Im in 11 grade i did this all ready
Step-by-step explanation: