3-(-6-9i)-(-7+2i)=

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Solution for 3-(-6-9i)-(-7+2i)= equation:


Simplifying
3 + -1(-6 + -9i) + -1(-7 + 2i) = 0
3 + (-6 * -1 + -9i * -1) + -1(-7 + 2i) = 0
3 + (6 + 9i) + -1(-7 + 2i) = 0
3 + 6 + 9i + (-7 * -1 + 2i * -1) = 0
3 + 6 + 9i + (7 + -2i) = 0

Reorder the terms:
3 + 6 + 7 + 9i + -2i = 0

Combine like terms: 3 + 6 = 9
9 + 7 + 9i + -2i = 0

Combine like terms: 9 + 7 = 16
16 + 9i + -2i = 0

Combine like terms: 9i + -2i = 7i
16 + 7i = 0

Solving
16 + 7i = 0

Solving for variable 'i'.

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

Add '-16' to each side of the equation.
16 + -16 + 7i = 0 + -16

Combine like terms: 16 + -16 = 0
0 + 7i = 0 + -16
7i = 0 + -16

Combine like terms: 0 + -16 = -16
7i = -16

Divide each side by '7'.
i = -2.285714286

Simplifying
i = -2.285714286

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