(2-7i)-(4-9i)=

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Solution for (2-7i)-(4-9i)= equation:


Simplifying
(2 + -7i) + -1(4 + -9i) = 0

Remove parenthesis around (2 + -7i)
2 + -7i + -1(4 + -9i) = 0
2 + -7i + (4 * -1 + -9i * -1) = 0
2 + -7i + (-4 + 9i) = 0

Reorder the terms:
2 + -4 + -7i + 9i = 0

Combine like terms: 2 + -4 = -2
-2 + -7i + 9i = 0

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

Solving
-2 + 2i = 0

Solving for variable 'i'.

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

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

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

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

Divide each side by '2'.
i = 1

Simplifying
i = 1

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