ln(x+7)-ln(2-x)=ln(x+1)

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Solution for ln(x+7)-ln(2-x)=ln(x+1) equation:


Simplifying
ln(x + 7) + -1ln(2 + -1x) = ln(x + 1)

Reorder the terms:
ln(7 + x) + -1ln(2 + -1x) = ln(x + 1)
(7 * ln + x * ln) + -1ln(2 + -1x) = ln(x + 1)
(7ln + lnx) + -1ln(2 + -1x) = ln(x + 1)
7ln + lnx + (2 * -1ln + -1x * -1ln) = ln(x + 1)
7ln + lnx + (-2ln + 1lnx) = ln(x + 1)

Reorder the terms:
7ln + -2ln + lnx + 1lnx = ln(x + 1)

Combine like terms: 7ln + -2ln = 5ln
5ln + lnx + 1lnx = ln(x + 1)

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

Reorder the terms:
5ln + 2lnx = ln(1 + x)
5ln + 2lnx = (1 * ln + x * ln)
5ln + 2lnx = (1ln + lnx)

Solving
5ln + 2lnx = 1ln + lnx

Solving for variable 'l'.

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

Add '-1ln' to each side of the equation.
5ln + -1ln + 2lnx = 1ln + -1ln + lnx

Combine like terms: 5ln + -1ln = 4ln
4ln + 2lnx = 1ln + -1ln + lnx

Combine like terms: 1ln + -1ln = 0
4ln + 2lnx = 0 + lnx
4ln + 2lnx = lnx

Add '-1lnx' to each side of the equation.
4ln + 2lnx + -1lnx = lnx + -1lnx

Combine like terms: 2lnx + -1lnx = 1lnx
4ln + 1lnx = lnx + -1lnx

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

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(4 + 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 '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Add '-1x' to each side of the equation. x + -1x = -4 + -1x Combine like terms: x + -1x = 0 0 = -4 + -1x Simplifying 0 = -4 + -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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