ln(3x)-ln(x-8)=ln(x+5)

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Solution for ln(3x)-ln(x-8)=ln(x+5) equation:


Simplifying
ln(3x) + -1ln(x + -8) = ln(x + 5)

Remove parenthesis around (3x)
ln * 3x + -1ln(x + -8) = ln(x + 5)

Reorder the terms for easier multiplication:
3ln * x + -1ln(x + -8) = ln(x + 5)

Multiply ln * x
3lnx + -1ln(x + -8) = ln(x + 5)

Reorder the terms:
3lnx + -1ln(-8 + x) = ln(x + 5)
3lnx + (-8 * -1ln + x * -1ln) = ln(x + 5)
3lnx + (8ln + -1lnx) = ln(x + 5)

Reorder the terms:
8ln + 3lnx + -1lnx = ln(x + 5)

Combine like terms: 3lnx + -1lnx = 2lnx
8ln + 2lnx = ln(x + 5)

Reorder the terms:
8ln + 2lnx = ln(5 + x)
8ln + 2lnx = (5 * ln + x * ln)
8ln + 2lnx = (5ln + lnx)

Solving
8ln + 2lnx = 5ln + lnx

Solving for variable 'l'.

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

Add '-5ln' to each side of the equation.
8ln + -5ln + 2lnx = 5ln + -5ln + lnx

Combine like terms: 8ln + -5ln = 3ln
3ln + 2lnx = 5ln + -5ln + lnx

Combine like terms: 5ln + -5ln = 0
3ln + 2lnx = 0 + lnx
3ln + 2lnx = lnx

Add '-1lnx' to each side of the equation.
3ln + 2lnx + -1lnx = lnx + -1lnx

Combine like terms: 2lnx + -1lnx = 1lnx
3ln + 1lnx = lnx + -1lnx

Combine like terms: lnx + -1lnx = 0
3ln + 1lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(3 + x) = 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 '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Add '-1x' to each side of the equation. x + -1x = -3 + -1x Combine like terms: x + -1x = 0 0 = -3 + -1x Simplifying 0 = -3 + -1x 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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