4i+9+3i=30

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Solution for 4i+9+3i=30 equation: 


Simplifying
4i + 9 + 3i = 30

Reorder the terms:
9 + 4i + 3i = 30

Combine like terms: 4i + 3i = 7i
9 + 7i = 30

Solving
9 + 7i = 30

Solving for variable 'i'.

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

Add '-9' to each side of the equation.
9 + -9 + 7i = 30 + -9

Combine like terms: 9 + -9 = 0
0 + 7i = 30 + -9
7i = 30 + -9

Combine like terms: 30 + -9 = 21
7i = 21

Divide each side by '7'.
i = 3

Simplifying
i = 3

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