3cos(3x)=-2

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Solution for 3cos(3x)=-2 equation: 


Simplifying
3cos(3x) = -2

Remove parenthesis around (3x)
3cos * 3x = -2

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

Multiply 3 * 3
9cos * x = -2

Multiply cos * x
9cosx = -2

Solving
9cosx = -2

Solving for variable 'c'.

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

Divide each side by '9osx'.
c = -0.2222222222o-1s-1x-1

Simplifying
c = -0.2222222222o-1s-1x-1

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