ln(7x+62)=ln(5x+42)

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Solution for ln(7x+62)=ln(5x+42) equation:


Simplifying
ln(7x + 62) = ln(5x + 42)

Reorder the terms:
ln(62 + 7x) = ln(5x + 42)
(62 * ln + 7x * ln) = ln(5x + 42)
(62ln + 7lnx) = ln(5x + 42)

Reorder the terms:
62ln + 7lnx = ln(42 + 5x)
62ln + 7lnx = (42 * ln + 5x * ln)
62ln + 7lnx = (42ln + 5lnx)

Solving
62ln + 7lnx = 42ln + 5lnx

Solving for variable 'l'.

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

Add '-42ln' to each side of the equation.
62ln + -42ln + 7lnx = 42ln + -42ln + 5lnx

Combine like terms: 62ln + -42ln = 20ln
20ln + 7lnx = 42ln + -42ln + 5lnx

Combine like terms: 42ln + -42ln = 0
20ln + 7lnx = 0 + 5lnx
20ln + 7lnx = 5lnx

Add '-5lnx' to each side of the equation.
20ln + 7lnx + -5lnx = 5lnx + -5lnx

Combine like terms: 7lnx + -5lnx = 2lnx
20ln + 2lnx = 5lnx + -5lnx

Combine like terms: 5lnx + -5lnx = 0
20ln + 2lnx = 0

Factor out the Greatest Common Factor (GCF), '2ln'.
2ln(10 + x) = 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 '(10 + x)' equal to zero and attempt to solve: Simplifying 10 + x = 0 Solving 10 + x = 0 Move all terms containing l to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + x = 0 + -10 x = 0 + -10 Combine like terms: 0 + -10 = -10 x = -10 Add '-1x' to each side of the equation. x + -1x = -10 + -1x Combine like terms: x + -1x = 0 0 = -10 + -1x Simplifying 0 = -10 + -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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