0=ln(9-y)

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Solution for 0=ln(9-y) equation: 


Simplifying
0 = ln(9 + -1y)
0 = (9 * ln + -1y * ln)
0 = (9ln + -1lny)

Solving
0 = 9ln + -1lny

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.
0 + -9ln = 9ln + -9ln + -1lny
Remove the zero:
-9ln = 9ln + -9ln + -1lny

Combine like terms: 9ln + -9ln = 0
-9ln = 0 + -1lny
-9ln = -1lny

Add 'lny' to each side of the equation.
-9ln + lny = -1lny + lny

Combine like terms: -1lny + lny = 0
-9ln + lny = 0

Factor out the Greatest Common Factor (GCF), 'ln'.
ln(-9 + y) = 0


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 '(-9 + y)' equal to zero and attempt to solve:

Simplifying
-9 + y = 0

Solving
-9 + y = 0

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

Add '9' to each side of the equation.
-9 + 9 + y = 0 + 9

Combine like terms: -9 + 9 = 0
0 + y = 0 + 9
y = 0 + 9

Combine like terms: 0 + 9 = 9
y = 9

Add '-1y' to each side of the equation.
y + -1y = 9 + -1y

Combine like terms: y + -1y = 0
0 = 9 + -1y

Simplifying
0 = 9 + -1y

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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