ln(x+4)=ln(x-9)-ln(x+9)

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Solution for ln(x+4)=ln(x-9)-ln(x+9) equation:


Simplifying
ln(x + 4) = ln(x + -9) + -1ln(x + 9)

Reorder the terms:
ln(4 + x) = ln(x + -9) + -1ln(x + 9)
(4 * ln + x * ln) = ln(x + -9) + -1ln(x + 9)
(4ln + lnx) = ln(x + -9) + -1ln(x + 9)

Reorder the terms:
4ln + lnx = ln(-9 + x) + -1ln(x + 9)
4ln + lnx = (-9 * ln + x * ln) + -1ln(x + 9)
4ln + lnx = (-9ln + lnx) + -1ln(x + 9)

Reorder the terms:
4ln + lnx = -9ln + lnx + -1ln(9 + x)
4ln + lnx = -9ln + lnx + (9 * -1ln + x * -1ln)
4ln + lnx = -9ln + lnx + (-9ln + -1lnx)

Reorder the terms:
4ln + lnx = -9ln + -9ln + lnx + -1lnx

Combine like terms: -9ln + -9ln = -18ln
4ln + lnx = -18ln + lnx + -1lnx

Combine like terms: lnx + -1lnx = 0
4ln + lnx = -18ln + 0
4ln + lnx = -18ln

Solving
4ln + lnx = -18ln

Solving for variable 'l'.

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

Add '18ln' to each side of the equation.
4ln + 18ln + lnx = -18ln + 18ln

Combine like terms: 4ln + 18ln = 22ln
22ln + lnx = -18ln + 18ln

Combine like terms: -18ln + 18ln = 0
22ln + lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(22 + 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 '(22 + x)' equal to zero and attempt to solve: Simplifying 22 + x = 0 Solving 22 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + x = 0 + -22 Combine like terms: 22 + -22 = 0 0 + x = 0 + -22 x = 0 + -22 Combine like terms: 0 + -22 = -22 x = -22 Add '-1x' to each side of the equation. x + -1x = -22 + -1x Combine like terms: x + -1x = 0 0 = -22 + -1x Simplifying 0 = -22 + -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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