ln(x-7)-2ln(x-1)=-2ln(5)

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Solution for ln(x-7)-2ln(x-1)=-2ln(5) equation:


Simplifying
ln(x + -7) + -2ln(x + -1) = -2ln(5)

Reorder the terms:
ln(-7 + x) + -2ln(x + -1) = -2ln(5)
(-7 * ln + x * ln) + -2ln(x + -1) = -2ln(5)
(-7ln + lnx) + -2ln(x + -1) = -2ln(5)

Reorder the terms:
-7ln + lnx + -2ln(-1 + x) = -2ln(5)
-7ln + lnx + (-1 * -2ln + x * -2ln) = -2ln(5)
-7ln + lnx + (2ln + -2lnx) = -2ln(5)

Reorder the terms:
-7ln + 2ln + lnx + -2lnx = -2ln(5)

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

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

Reorder the terms for easier multiplication:
-5ln + -1lnx = -2 * 5ln

Multiply -2 * 5
-5ln + -1lnx = -10ln

Solving
-5ln + -1lnx = -10ln

Solving for variable 'l'.

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

Add '10ln' to each side of the equation.
-5ln + 10ln + -1lnx = -10ln + 10ln

Combine like terms: -5ln + 10ln = 5ln
5ln + -1lnx = -10ln + 10ln

Combine like terms: -10ln + 10ln = 0
5ln + -1lnx = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(5 + -1x) = 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 '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing l to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Add 'x' to each side of the equation. -1x + x = -5 + x Combine like terms: -1x + x = 0 0 = -5 + x Simplifying 0 = -5 + x 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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