ln(7+x)+ln(x)=ln(3x+9)

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Solution for ln(7+x)+ln(x)=ln(3x+9) equation:


Simplifying
ln(7 + x) + ln(x) = ln(3x + 9)
(7 * ln + x * ln) + ln(x) = ln(3x + 9)
(7ln + lnx) + ln(x) = ln(3x + 9)

Multiply ln * x
7ln + lnx + lnx = ln(3x + 9)

Combine like terms: lnx + lnx = 2lnx
7ln + 2lnx = ln(3x + 9)

Reorder the terms:
7ln + 2lnx = ln(9 + 3x)
7ln + 2lnx = (9 * ln + 3x * ln)
7ln + 2lnx = (9ln + 3lnx)

Solving
7ln + 2lnx = 9ln + 3lnx

Solving for variable 'l'.

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

Add '-9ln' to each side of the equation.
7ln + -9ln + 2lnx = 9ln + -9ln + 3lnx

Combine like terms: 7ln + -9ln = -2ln
-2ln + 2lnx = 9ln + -9ln + 3lnx

Combine like terms: 9ln + -9ln = 0
-2ln + 2lnx = 0 + 3lnx
-2ln + 2lnx = 3lnx

Add '-3lnx' to each side of the equation.
-2ln + 2lnx + -3lnx = 3lnx + -3lnx

Combine like terms: 2lnx + -3lnx = -1lnx
-2ln + -1lnx = 3lnx + -3lnx

Combine like terms: 3lnx + -3lnx = 0
-2ln + -1lnx = 0

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