4x+cos(x)=0

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Solution for 4x+cos(x)=0 equation: 


Simplifying
4x + cos(x) = 0

Multiply cos * x
4x + cosx = 0

Reorder the terms:
cosx + 4x = 0

Solving
cosx + 4x = 0

Solving for variable 'c'.

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

Add '-4x' to each side of the equation.
cosx + 4x + -4x = 0 + -4x

Combine like terms: 4x + -4x = 0
cosx + 0 = 0 + -4x
cosx = 0 + -4x
Remove the zero:
cosx = -4x

Divide each side by 'osx'.
c = -4o-1s-1

Simplifying
c = -4o-1s-1

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