(-5-4i)+(-4+7i)=

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Solution for (-5-4i)+(-4+7i)= equation:


Simplifying
(-5 + -4i) + (-4 + 7i) = 0

Remove parenthesis around (-5 + -4i)
-5 + -4i + (-4 + 7i) = 0

Remove parenthesis around (-4 + 7i)
-5 + -4i + -4 + 7i = 0

Reorder the terms:
-5 + -4 + -4i + 7i = 0

Combine like terms: -5 + -4 = -9
-9 + -4i + 7i = 0

Combine like terms: -4i + 7i = 3i
-9 + 3i = 0

Solving
-9 + 3i = 0

Solving for variable 'i'.

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

Add '9' to each side of the equation.
-9 + 9 + 3i = 0 + 9

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

Combine like terms: 0 + 9 = 9
3i = 9

Divide each side by '3'.
i = 3

Simplifying
i = 3

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