X=-2cos(3y)

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Solution for X=-2cos(3y) equation: 


Simplifying
X = -2cos(3y)

Remove parenthesis around (3y)
X = -2cos * 3y

Reorder the terms for easier multiplication:
X = -2 * 3cos * y

Multiply -2 * 3
X = -6cos * y

Multiply cos * y
X = -6cosy

Solving
X = -6cosy

Solving for variable 'X'.

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

Simplifying
X = -6cosy

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