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

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

Combine like terms: 6 + 7 = 13
3 = 13 + 9i + -2i

Combine like terms: 9i + -2i = 7i
3 = 13 + 7i

Solving
3 = 13 + 7i

Solving for variable 'i'.

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

Add '-7i' to each side of the equation.
3 + -7i = 13 + 7i + -7i

Combine like terms: 7i + -7i = 0
3 + -7i = 13 + 0
3 + -7i = 13

Add '-3' to each side of the equation.
3 + -3 + -7i = 13 + -3

Combine like terms: 3 + -3 = 0
0 + -7i = 13 + -3
-7i = 13 + -3

Combine like terms: 13 + -3 = 10
-7i = 10

Divide each side by '-7'.
i = -1.428571429

Simplifying
i = -1.428571429

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