(7-8i)-(2-i)=

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Solution for (7-8i)-(2-i)= equation:


Simplifying
(7 + -8i) + -1(2 + -1i) = 0

Remove parenthesis around (7 + -8i)
7 + -8i + -1(2 + -1i) = 0
7 + -8i + (2 * -1 + -1i * -1) = 0
7 + -8i + (-2 + 1i) = 0

Reorder the terms:
7 + -2 + -8i + 1i = 0

Combine like terms: 7 + -2 = 5
5 + -8i + 1i = 0

Combine like terms: -8i + 1i = -7i
5 + -7i = 0

Solving
5 + -7i = 0

Solving for variable 'i'.

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

Add '-5' to each side of the equation.
5 + -5 + -7i = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -7i = 0 + -5
-7i = 0 + -5

Combine like terms: 0 + -5 = -5
-7i = -5

Divide each side by '-7'.
i = 0.7142857143

Simplifying
i = 0.7142857143

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