(Cos*(3*x))+(cos*x)=0

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Solution for (Cos*(3*x))+(cos*x)=0 equation: 


Simplifying
(Cos(3x)) + (cos * x) = 0

Remove parenthesis around (3x)
(osC * 3x) + (cos * x) = 0

Reorder the terms for easier multiplication:
(3osC * x) + (cos * x) = 0

Multiply osC * x
(3osxC) + (cos * x) = 0

Multiply cos * x
(3osxC) + (cosx) = 0
(3osxC) + cosx = 0

Reorder the terms:
cosx + (3osxC) = 0

Solving
cosx + (3osxC) = 0

Solving for variable 'c'.

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

Add '(-3osxC)' to each side of the equation.
cosx + (3osxC) + (-3osxC) = 0 + (-3osxC)

Combine like terms: (3osxC) + (-3osxC) = 0
cosx + 0 = 0 + (-3osxC)
cosx = 0 + (-3osxC)
Remove the zero:
cosx = (-3osxC)

Divide each side by 'osx'.
c = (-3C)

Simplifying
c = (-3C)

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