ln(4x-3)=ln(15)-ln(x-5)

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Solution for ln(4x-3)=ln(15)-ln(x-5) equation:


Simplifying
ln(4x + -3) = ln(15) + -1ln(x + -5)

Reorder the terms:
ln(-3 + 4x) = ln(15) + -1ln(x + -5)
(-3 * ln + 4x * ln) = ln(15) + -1ln(x + -5)
(-3ln + 4lnx) = ln(15) + -1ln(x + -5)

Reorder the terms for easier multiplication:
-3ln + 4lnx = 15ln + -1ln(x + -5)

Reorder the terms:
-3ln + 4lnx = 15ln + -1ln(-5 + x)
-3ln + 4lnx = 15ln + (-5 * -1ln + x * -1ln)
-3ln + 4lnx = 15ln + (5ln + -1lnx)

Combine like terms: 15ln + 5ln = 20ln
-3ln + 4lnx = 20ln + -1lnx

Solving
-3ln + 4lnx = 20ln + -1lnx

Solving for variable 'l'.

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

Add '-20ln' to each side of the equation.
-3ln + -20ln + 4lnx = 20ln + -20ln + -1lnx

Combine like terms: -3ln + -20ln = -23ln
-23ln + 4lnx = 20ln + -20ln + -1lnx

Combine like terms: 20ln + -20ln = 0
-23ln + 4lnx = 0 + -1lnx
-23ln + 4lnx = -1lnx

Add 'lnx' to each side of the equation.
-23ln + 4lnx + lnx = -1lnx + lnx

Combine like terms: 4lnx + lnx = 5lnx
-23ln + 5lnx = -1lnx + lnx

Combine like terms: -1lnx + lnx = 0
-23ln + 5lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(-23 + 5x) = 0

Subproblem 1

Set the factor 'ln' equal to zero and attempt to solve: Simplifying ln = 0 Solving ln = 0 Move all terms containing l to the left, all other terms to the right. Simplifying ln = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-23 + 5x)' equal to zero and attempt to solve: Simplifying -23 + 5x = 0 Solving -23 + 5x = 0 Move all terms containing l to the left, all other terms to the right. Add '23' to each side of the equation. -23 + 23 + 5x = 0 + 23 Combine like terms: -23 + 23 = 0 0 + 5x = 0 + 23 5x = 0 + 23 Combine like terms: 0 + 23 = 23 5x = 23 Add '-5x' to each side of the equation. 5x + -5x = 23 + -5x Combine like terms: 5x + -5x = 0 0 = 23 + -5x Simplifying 0 = 23 + -5x The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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