(-5-4i)+(8+7i)=

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Solution for (-5-4i)+(8+7i)= equation:


Simplifying
(-5 + -4i) + (8 + 7i) = 0

Remove parenthesis around (-5 + -4i)
-5 + -4i + (8 + 7i) = 0

Remove parenthesis around (8 + 7i)
-5 + -4i + 8 + 7i = 0

Reorder the terms:
-5 + 8 + -4i + 7i = 0

Combine like terms: -5 + 8 = 3
3 + -4i + 7i = 0

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

Solving
3 + 3i = 0

Solving for variable 'i'.

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

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

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

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

Divide each side by '3'.
i = -1

Simplifying
i = -1

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