9(i+2)=(i-2)

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Solution for 9(i+2)=(i-2) equation:


Simplifying
9(i + 2) = (i + -2)

Reorder the terms:
9(2 + i) = (i + -2)
(2 * 9 + i * 9) = (i + -2)
(18 + 9i) = (i + -2)

Reorder the terms:
18 + 9i = (-2 + i)

Remove parenthesis around (-2 + i)
18 + 9i = -2 + i

Solving
18 + 9i = -2 + i

Solving for variable 'i'.

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

Add '-1i' to each side of the equation.
18 + 9i + -1i = -2 + i + -1i

Combine like terms: 9i + -1i = 8i
18 + 8i = -2 + i + -1i

Combine like terms: i + -1i = 0
18 + 8i = -2 + 0
18 + 8i = -2

Add '-18' to each side of the equation.
18 + -18 + 8i = -2 + -18

Combine like terms: 18 + -18 = 0
0 + 8i = -2 + -18
8i = -2 + -18

Combine like terms: -2 + -18 = -20
8i = -20

Divide each side by '8'.
i = -2.5

Simplifying
i = -2.5

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