(9+4i)-(-4+i)=

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Solution for (9+4i)-(-4+i)= equation:


Simplifying
(9 + 4i) + -1(-4 + i) = 0

Remove parenthesis around (9 + 4i)
9 + 4i + -1(-4 + i) = 0
9 + 4i + (-4 * -1 + i * -1) = 0
9 + 4i + (4 + -1i) = 0

Reorder the terms:
9 + 4 + 4i + -1i = 0

Combine like terms: 9 + 4 = 13
13 + 4i + -1i = 0

Combine like terms: 4i + -1i = 3i
13 + 3i = 0

Solving
13 + 3i = 0

Solving for variable 'i'.

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

Add '-13' to each side of the equation.
13 + -13 + 3i = 0 + -13

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

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

Divide each side by '3'.
i = -4.333333333

Simplifying
i = -4.333333333

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