(7-5i)-(9-9i)=

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Solution for (7-5i)-(9-9i)= equation:


Simplifying
(7 + -5i) + -1(9 + -9i) = 0

Remove parenthesis around (7 + -5i)
7 + -5i + -1(9 + -9i) = 0
7 + -5i + (9 * -1 + -9i * -1) = 0
7 + -5i + (-9 + 9i) = 0

Reorder the terms:
7 + -9 + -5i + 9i = 0

Combine like terms: 7 + -9 = -2
-2 + -5i + 9i = 0

Combine like terms: -5i + 9i = 4i
-2 + 4i = 0

Solving
-2 + 4i = 0

Solving for variable 'i'.

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

Add '2' to each side of the equation.
-2 + 2 + 4i = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 4i = 0 + 2
4i = 0 + 2

Combine like terms: 0 + 2 = 2
4i = 2

Divide each side by '4'.
i = 0.5

Simplifying
i = 0.5

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