ln(7x+3)-ln(x+1)=ln(2x)

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Solution for ln(7x+3)-ln(x+1)=ln(2x) equation:


Simplifying
ln(7x + 3) + -1ln(x + 1) = ln(2x)

Reorder the terms:
ln(3 + 7x) + -1ln(x + 1) = ln(2x)
(3 * ln + 7x * ln) + -1ln(x + 1) = ln(2x)
(3ln + 7lnx) + -1ln(x + 1) = ln(2x)

Reorder the terms:
3ln + 7lnx + -1ln(1 + x) = ln(2x)
3ln + 7lnx + (1 * -1ln + x * -1ln) = ln(2x)
3ln + 7lnx + (-1ln + -1lnx) = ln(2x)

Reorder the terms:
3ln + -1ln + 7lnx + -1lnx = ln(2x)

Combine like terms: 3ln + -1ln = 2ln
2ln + 7lnx + -1lnx = ln(2x)

Combine like terms: 7lnx + -1lnx = 6lnx
2ln + 6lnx = ln(2x)

Remove parenthesis around (2x)
2ln + 6lnx = ln * 2x

Reorder the terms for easier multiplication:
2ln + 6lnx = 2ln * x

Multiply ln * x
2ln + 6lnx = 2lnx

Solving
2ln + 6lnx = 2lnx

Solving for variable 'l'.

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

Add '-2lnx' to each side of the equation.
2ln + 6lnx + -2lnx = 2lnx + -2lnx

Combine like terms: 6lnx + -2lnx = 4lnx
2ln + 4lnx = 2lnx + -2lnx

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

Factor out the Greatest Common Factor (GCF), '2ln'.
2ln(1 + 2x) = 0

Ignore the factor 2.

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 '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 0 Move all terms containing l to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Add '-2x' to each side of the equation. 2x + -2x = -1 + -2x Combine like terms: 2x + -2x = 0 0 = -1 + -2x Simplifying 0 = -1 + -2x 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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