9i=4i+20

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Solution for 9i=4i+20 equation: 


Simplifying
9i = 4i + 20

Reorder the terms:
9i = 20 + 4i

Solving
9i = 20 + 4i

Solving for variable 'i'.

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

Add '-4i' to each side of the equation.
9i + -4i = 20 + 4i + -4i

Combine like terms: 9i + -4i = 5i
5i = 20 + 4i + -4i

Combine like terms: 4i + -4i = 0
5i = 20 + 0
5i = 20

Divide each side by '5'.
i = 4

Simplifying
i = 4

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