(2-5i)+(8+7i)=

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Solution for (2-5i)+(8+7i)= equation:


Simplifying
(2 + -5i) + (8 + 7i) = 0

Remove parenthesis around (2 + -5i)
2 + -5i + (8 + 7i) = 0

Remove parenthesis around (8 + 7i)
2 + -5i + 8 + 7i = 0

Reorder the terms:
2 + 8 + -5i + 7i = 0

Combine like terms: 2 + 8 = 10
10 + -5i + 7i = 0

Combine like terms: -5i + 7i = 2i
10 + 2i = 0

Solving
10 + 2i = 0

Solving for variable 'i'.

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

Add '-10' to each side of the equation.
10 + -10 + 2i = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 2i = 0 + -10
2i = 0 + -10

Combine like terms: 0 + -10 = -10
2i = -10

Divide each side by '2'.
i = -5

Simplifying
i = -5

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