15=9-k

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Solution for 15=9-k equation:


Simplifying
15 = 9 + -1k

Solving
15 = 9 + -1k

Solving for variable 'k'.

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

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

Combine like terms: -1k + k = 0
15 + k = 9 + 0
15 + k = 9

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

Combine like terms: 15 + -15 = 0
0 + k = 9 + -15
k = 9 + -15

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

Simplifying
k = -6

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