ln(7-x)-ln(-4-x)=ln(2-4x)

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Solution for ln(7-x)-ln(-4-x)=ln(2-4x) equation:


Simplifying
ln(7 + -1x) + -1ln(-4 + -1x) = ln(2 + -4x)
(7 * ln + -1x * ln) + -1ln(-4 + -1x) = ln(2 + -4x)
(7ln + -1lnx) + -1ln(-4 + -1x) = ln(2 + -4x)
7ln + -1lnx + (-4 * -1ln + -1x * -1ln) = ln(2 + -4x)
7ln + -1lnx + (4ln + 1lnx) = ln(2 + -4x)

Reorder the terms:
7ln + 4ln + -1lnx + 1lnx = ln(2 + -4x)

Combine like terms: 7ln + 4ln = 11ln
11ln + -1lnx + 1lnx = ln(2 + -4x)

Combine like terms: -1lnx + 1lnx = 0
11ln + 0 = ln(2 + -4x)
11ln = ln(2 + -4x)
11ln = (2 * ln + -4x * ln)
11ln = (2ln + -4lnx)

Solving
11ln = 2ln + -4lnx

Solving for variable 'l'.

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

Add '-2ln' to each side of the equation.
11ln + -2ln = 2ln + -2ln + -4lnx

Combine like terms: 11ln + -2ln = 9ln
9ln = 2ln + -2ln + -4lnx

Combine like terms: 2ln + -2ln = 0
9ln = 0 + -4lnx
9ln = -4lnx

Add '4lnx' to each side of the equation.
9ln + 4lnx = -4lnx + 4lnx

Combine like terms: -4lnx + 4lnx = 0
9ln + 4lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(9 + 4x) = 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 '(9 + 4x)' equal to zero and attempt to solve: Simplifying 9 + 4x = 0 Solving 9 + 4x = 0 Move all terms containing l to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 4x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4x = 0 + -9 4x = 0 + -9 Combine like terms: 0 + -9 = -9 4x = -9 Add '-4x' to each side of the equation. 4x + -4x = -9 + -4x Combine like terms: 4x + -4x = 0 0 = -9 + -4x Simplifying 0 = -9 + -4x 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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