(4-7i)-(7-9i)=

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Solution for (4-7i)-(7-9i)= equation:


Simplifying
(4 + -7i) + -1(7 + -9i) = 0

Remove parenthesis around (4 + -7i)
4 + -7i + -1(7 + -9i) = 0
4 + -7i + (7 * -1 + -9i * -1) = 0
4 + -7i + (-7 + 9i) = 0

Reorder the terms:
4 + -7 + -7i + 9i = 0

Combine like terms: 4 + -7 = -3
-3 + -7i + 9i = 0

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

Solving
-3 + 2i = 0

Solving for variable 'i'.

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

Add '3' to each side of the equation.
-3 + 3 + 2i = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 2i = 0 + 3
2i = 0 + 3

Combine like terms: 0 + 3 = 3
2i = 3

Divide each side by '2'.
i = 1.5

Simplifying
i = 1.5

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