f(x)=ln(4-5x)

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Solution for f(x)=ln(4-5x) equation: 


Simplifying
f(x) = ln(4 + -5x)

Multiply f * x
fx = ln(4 + -5x)
fx = (4 * ln + -5x * ln)
fx = (4ln + -5lnx)

Solving
fx = 4ln + -5lnx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 4lnx-1 + -5ln

Simplifying
f = 4lnx-1 + -5ln

Reorder the terms:
f = -5ln + 4lnx-1

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