ln(3x+20)=ln(7x)

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Solution for ln(3x+20)=ln(7x) equation:


Simplifying
ln(3x + 20) = ln(7x)

Reorder the terms:
ln(20 + 3x) = ln(7x)
(20 * ln + 3x * ln) = ln(7x)
(20ln + 3lnx) = ln(7x)

Remove parenthesis around (7x)
20ln + 3lnx = ln * 7x

Reorder the terms for easier multiplication:
20ln + 3lnx = 7ln * x

Multiply ln * x
20ln + 3lnx = 7lnx

Solving
20ln + 3lnx = 7lnx

Solving for variable 'l'.

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

Add '-7lnx' to each side of the equation.
20ln + 3lnx + -7lnx = 7lnx + -7lnx

Combine like terms: 3lnx + -7lnx = -4lnx
20ln + -4lnx = 7lnx + -7lnx

Combine like terms: 7lnx + -7lnx = 0
20ln + -4lnx = 0

Factor out the Greatest Common Factor (GCF), '4ln'.
4ln(5 + -1x) = 0

Ignore the factor 4.

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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