15k=(9-x)k

Solution for 15k=(9-x)k equation:

Simplifying
15k = (9 + -1x) * k

Reorder the terms for easier multiplication:
15k = k(9 + -1x)
15k = (9 * k + -1x * k)
15k = (9k + -1kx)

Solving
15k = 9k + -1kx

Solving for variable 'k'.

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

Add '-9k' to each side of the equation.
15k + -9k = 9k + -9k + -1kx

Combine like terms: 15k + -9k = 6k
6k = 9k + -9k + -1kx

Combine like terms: 9k + -9k = 0
6k = 0 + -1kx
6k = -1kx

Add 'kx' to each side of the equation.
6k + kx = -1kx + kx

Combine like terms: -1kx + kx = 0
6k + kx = 0

Factor out the Greatest Common Factor (GCF), 'k'.
k(6 + x) = 0

Subproblem 1
Set the factor 'k' equal to zero and attempt to solve:

Simplifying
k = 0

Solving
k = 0

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

Simplifying
k = 0
Subproblem 2
Set the factor '(6 + x)' equal to zero and attempt to solve:

Simplifying
6 + x = 0

Solving
6 + x = 0

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

Add '-6' to each side of the equation.
6 + -6 + x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + x = 0 + -6
x = 0 + -6

Combine like terms: 0 + -6 = -6
x = -6

Add '-1x' to each side of the equation.
x + -1x = -6 + -1x

Combine like terms: x + -1x = 0
0 = -6 + -1x

Simplifying
0 = -6 + -1x

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
k = {0}