3(2i-6)=18-21

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Solution for 3(2i-6)=18-21 equation:


Simplifying
3(2i + -6) = 18 + -21

Reorder the terms:
3(-6 + 2i) = 18 + -21
(-6 * 3 + 2i * 3) = 18 + -21
(-18 + 6i) = 18 + -21

Combine like terms: 18 + -21 = -3
-18 + 6i = -3

Solving
-18 + 6i = -3

Solving for variable 'i'.

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

Add '18' to each side of the equation.
-18 + 18 + 6i = -3 + 18

Combine like terms: -18 + 18 = 0
0 + 6i = -3 + 18
6i = -3 + 18

Combine like terms: -3 + 18 = 15
6i = 15

Divide each side by '6'.
i = 2.5

Simplifying
i = 2.5

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