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

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


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

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

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

Solving
-7ln + lnx = 5ln + 2lnx

Solving for variable 'l'.

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

Add '-5ln' to each side of the equation.
-7ln + -5ln + lnx = 5ln + -5ln + 2lnx

Combine like terms: -7ln + -5ln = -12ln
-12ln + lnx = 5ln + -5ln + 2lnx

Combine like terms: 5ln + -5ln = 0
-12ln + lnx = 0 + 2lnx
-12ln + lnx = 2lnx

Add '-2lnx' to each side of the equation.
-12ln + lnx + -2lnx = 2lnx + -2lnx

Combine like terms: lnx + -2lnx = -1lnx
-12ln + -1lnx = 2lnx + -2lnx

Combine like terms: 2lnx + -2lnx = 0
-12ln + -1lnx = 0

Factor out the Greatest Common Factor (GCF), '-1ln'.
-1ln(12 + x) = 0

Ignore the factor -1.

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 '(12 + x)' equal to zero and attempt to solve: Simplifying 12 + x = 0 Solving 12 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + x = 0 + -12 x = 0 + -12 Combine like terms: 0 + -12 = -12 x = -12 Add '-1x' to each side of the equation. x + -1x = -12 + -1x Combine like terms: x + -1x = 0 0 = -12 + -1x Simplifying 0 = -12 + -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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