(-30i+7)-(9i-8)=

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Solution for (-30i+7)-(9i-8)= equation:


Simplifying
(-30i + 7) + -1(9i + -8) = 0

Reorder the terms:
(7 + -30i) + -1(9i + -8) = 0

Remove parenthesis around (7 + -30i)
7 + -30i + -1(9i + -8) = 0

Reorder the terms:
7 + -30i + -1(-8 + 9i) = 0
7 + -30i + (-8 * -1 + 9i * -1) = 0
7 + -30i + (8 + -9i) = 0

Reorder the terms:
7 + 8 + -30i + -9i = 0

Combine like terms: 7 + 8 = 15
15 + -30i + -9i = 0

Combine like terms: -30i + -9i = -39i
15 + -39i = 0

Solving
15 + -39i = 0

Solving for variable 'i'.

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

Add '-15' to each side of the equation.
15 + -15 + -39i = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -39i = 0 + -15
-39i = 0 + -15

Combine like terms: 0 + -15 = -15
-39i = -15

Divide each side by '-39'.
i = 0.3846153846

Simplifying
i = 0.3846153846

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