(3+2i)+(9-3i)=

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Solution for (3+2i)+(9-3i)= equation:


Simplifying
(3 + 2i) + (9 + -3i) = 0

Remove parenthesis around (3 + 2i)
3 + 2i + (9 + -3i) = 0

Remove parenthesis around (9 + -3i)
3 + 2i + 9 + -3i = 0

Reorder the terms:
3 + 9 + 2i + -3i = 0

Combine like terms: 3 + 9 = 12
12 + 2i + -3i = 0

Combine like terms: 2i + -3i = -1i
12 + -1i = 0

Solving
12 + -1i = 0

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Add '-12' to each side of the equation.
12 + -12 + -1i = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1i = 0 + -12
-1i = 0 + -12

Combine like terms: 0 + -12 = -12
-1i = -12

Divide each side by '-1'.
i = 12

Simplifying
i = 12

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