ln(x+7)=ln(x-3)-ln(x+3)

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Solution for ln(x+7)=ln(x-3)-ln(x+3) equation:


Simplifying
ln(x + 7) = ln(x + -3) + -1ln(x + 3)

Reorder the terms:
ln(7 + x) = ln(x + -3) + -1ln(x + 3)
(7 * ln + x * ln) = ln(x + -3) + -1ln(x + 3)
(7ln + lnx) = ln(x + -3) + -1ln(x + 3)

Reorder the terms:
7ln + lnx = ln(-3 + x) + -1ln(x + 3)
7ln + lnx = (-3 * ln + x * ln) + -1ln(x + 3)
7ln + lnx = (-3ln + lnx) + -1ln(x + 3)

Reorder the terms:
7ln + lnx = -3ln + lnx + -1ln(3 + x)
7ln + lnx = -3ln + lnx + (3 * -1ln + x * -1ln)
7ln + lnx = -3ln + lnx + (-3ln + -1lnx)

Reorder the terms:
7ln + lnx = -3ln + -3ln + lnx + -1lnx

Combine like terms: -3ln + -3ln = -6ln
7ln + lnx = -6ln + lnx + -1lnx

Combine like terms: lnx + -1lnx = 0
7ln + lnx = -6ln + 0
7ln + lnx = -6ln

Solving
7ln + lnx = -6ln

Solving for variable 'l'.

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

Add '6ln' to each side of the equation.
7ln + 6ln + lnx = -6ln + 6ln

Combine like terms: 7ln + 6ln = 13ln
13ln + lnx = -6ln + 6ln

Combine like terms: -6ln + 6ln = 0
13ln + lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(13 + 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 '(13 + x)' equal to zero and attempt to solve: Simplifying 13 + x = 0 Solving 13 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = 0 + -13 Combine like terms: 13 + -13 = 0 0 + x = 0 + -13 x = 0 + -13 Combine like terms: 0 + -13 = -13 x = -13 Add '-1x' to each side of the equation. x + -1x = -13 + -1x Combine like terms: x + -1x = 0 0 = -13 + -1x Simplifying 0 = -13 + -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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