(9+3i)-(-2-7i)=

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Solution for (9+3i)-(-2-7i)= equation:


Simplifying
(9 + 3i) + -1(-2 + -7i) = 0

Remove parenthesis around (9 + 3i)
9 + 3i + -1(-2 + -7i) = 0
9 + 3i + (-2 * -1 + -7i * -1) = 0
9 + 3i + (2 + 7i) = 0

Reorder the terms:
9 + 2 + 3i + 7i = 0

Combine like terms: 9 + 2 = 11
11 + 3i + 7i = 0

Combine like terms: 3i + 7i = 10i
11 + 10i = 0

Solving
11 + 10i = 0

Solving for variable 'i'.

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

Add '-11' to each side of the equation.
11 + -11 + 10i = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 10i = 0 + -11
10i = 0 + -11

Combine like terms: 0 + -11 = -11
10i = -11

Divide each side by '10'.
i = -1.1

Simplifying
i = -1.1

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