13-4=i

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Solution for 13-4=i equation:


Simplifying
13 + -4 = i

Combine like terms: 13 + -4 = 9
9 = i

Solving
9 = 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.
9 + -1i = i + -1i

Combine like terms: i + -1i = 0
9 + -1i = 0

Add '-9' to each side of the equation.
9 + -9 + -1i = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1i = 0 + -9
-1i = 0 + -9

Combine like terms: 0 + -9 = -9
-1i = -9

Divide each side by '-1'.
i = 9

Simplifying
i = 9

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