(4+7i)+(9-4i)=

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Solution for (4+7i)+(9-4i)= equation:


Simplifying
(4 + 7i) + (9 + -4i) = 0

Remove parenthesis around (4 + 7i)
4 + 7i + (9 + -4i) = 0

Remove parenthesis around (9 + -4i)
4 + 7i + 9 + -4i = 0

Reorder the terms:
4 + 9 + 7i + -4i = 0

Combine like terms: 4 + 9 = 13
13 + 7i + -4i = 0

Combine like terms: 7i + -4i = 3i
13 + 3i = 0

Solving
13 + 3i = 0

Solving for variable 'i'.

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

Add '-13' to each side of the equation.
13 + -13 + 3i = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 3i = 0 + -13
3i = 0 + -13

Combine like terms: 0 + -13 = -13
3i = -13

Divide each side by '3'.
i = -4.333333333

Simplifying
i = -4.333333333

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