15=i-4

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Solution for 15=i-4 equation:


Simplifying
15 = i + -4

Reorder the terms:
15 = -4 + i

Solving
15 = -4 + 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.
15 + -1i = -4 + i + -1i

Combine like terms: i + -1i = 0
15 + -1i = -4 + 0
15 + -1i = -4

Add '-15' to each side of the equation.
15 + -15 + -1i = -4 + -15

Combine like terms: 15 + -15 = 0
0 + -1i = -4 + -15
-1i = -4 + -15

Combine like terms: -4 + -15 = -19
-1i = -19

Divide each side by '-1'.
i = 19

Simplifying
i = 19

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