4x-5i=2i-21u+4x

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Solution for 4x-5i=2i-21u+4x equation:


Simplifying
4x + -5i = 2i + -21u + 4x

Reorder the terms:
-5i + 4x = 2i + -21u + 4x

Add '-4x' to each side of the equation.
-5i + 4x + -4x = 2i + -21u + 4x + -4x

Combine like terms: 4x + -4x = 0
-5i + 0 = 2i + -21u + 4x + -4x
-5i = 2i + -21u + 4x + -4x

Combine like terms: 4x + -4x = 0
-5i = 2i + -21u + 0
-5i = 2i + -21u

Solving
-5i = 2i + -21u

Solving for variable 'i'.

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

Add '-2i' to each side of the equation.
-5i + -2i = 2i + -2i + -21u

Combine like terms: -5i + -2i = -7i
-7i = 2i + -2i + -21u

Combine like terms: 2i + -2i = 0
-7i = 0 + -21u
-7i = -21u

Divide each side by '-7'.
i = 3u

Simplifying
i = 3u

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